  
    




Untitled Story



<tw-noscript>JavaScript needs to be enabled to play Untitled Story.</tw-noscript>
Algae Dichotomous Key (Microscope Traits)<div class="card">
  <h3>Microscope Dichotomous Key (Algae)</h3>
  <p>Answer only what you can see in brightfield: filament vs single cell, colony shape, obvious shells/plates, spirals, grids, and distinctive morphologies.</p>
  <p>[[Start the key->Question 1 Filament]]</p>
</div><div class="card">
  <h3>Question 1</h3>
  <p><b>Q1:</b> Is the organism primarily <b>filamentous</b> (a thread/chain of many connected cells)?</p>
  <p>[[Yes — filament/thread->Question 2 Spiral Filament]]<br>[[No — not a filament->Question 10 Colony Check]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 2</h3>
  <p><b>Q2:</b> Is the filament <b>spiral/helical</b> like a spring or corkscrew?</p>
  <p>[[Yes->Result Spirulina]]<br>[[No->Question 3 Heterocyst Check]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 3</h3>
  <p><b>Q3:</b> Do you see occasional <b>larger, paler heterocyst cells</b> in the filament?</p>
  <p>[[Yes->Question 4 Mucilage Check]]<br>[[No->Question 6 Cyanobacteria vs Brown Filaments]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 4</h3>
  <p><b>Q4:</b> Is the filament embedded in obvious <b>gelatinous/mucilaginous material</b> (beads-in-jelly look)?</p>
  <p>[[Yes->Result Nostoc]]<br>[[No->Result Cylindrospermum]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 6</h3>
  <p><b>Q6:</b> Do the filaments look like <b>very narrow blue-green threads</b> made of tiny “stacked” cells, without obvious branching?</p>
  <p>[[Yes->Result Phormidium]]<br>[[No / branching brown filaments or tissue->Question 7 Brown Algae Check]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 7</h3>
  <p><b>Q7:</b> Do you see <b>flat blade-like tissue</b> with repeated <b>Y-shaped (dichotomous) branching</b>?</p>
  <p>[[Yes->Result Dictyota]]<br>[[No->Question 8 Tufted Tips Check]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 8</h3>
  <p><b>Q8:</b> Is it a <b>dense tuft/brush</b> of filaments with noticeably darker tips (apical cells)?</p>
  <p>[[Yes->Result Sphacelaria]]<br>[[No->Question 9 Ectocarpus Check]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 9</h3>
  <p><b>Q9:</b> Do you see <b>branched hair-like filaments</b> with many small reproductive packets along the threads?</p>
  <p>[[Yes->Result Ectocarpus]]<br>[[No / unsure->Result Brown Filament Group]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 10</h3>
  <p><b>Q10:</b> Is it clearly a <b>colony</b> (many cells arranged in a stable pattern) rather than a single cell?</p>
  <p>[[Yes — colony->Question 11 Spherical Colony]]<br>[[No — single cells dominate->Question 20 Shell Plate Check]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 11</h3>
  <p><b>Q11:</b> Is the colony a <b>large hollow sphere</b> with many tiny cells on the surface (sometimes with smaller spheres inside)?</p>
  <p>[[Yes->Result Volvox]]<br>[[No->Question 12 Small Spherical Colony]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 12</h3>
  <p><b>Q12:</b> Is the colony a <b>small sphere/oval</b> made of a limited number of cells (often 8–32), without obvious daughter colonies?</p>
  <p>[[Yes->Result Pandorina]]<br>[[No->Question 13 Flat Disk Colony]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 13</h3>
  <p><b>Q13:</b> Is it a <b>flat, disk-like green colony</b> with a star/gear outline (distinct edge “points”)?</p>
  <p>[[Yes->Result Pediastrum]]<br>[[No->Question 14 Tile Grid Colony]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 14</h3>
  <p><b>Q14:</b> Is it a <b>flat grid/plate colony</b> of many tiny cells arranged like tiles?</p>
  <p>[[Yes->Result Merismopedia]]<br>[[No->Question 15 Oocystis Envelope]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 15</h3>
  <p><b>Q15:</b> Do you see <b>oval cells in a clear gelatinous envelope</b>, often in pairs/4s (cells-in-a-bag look)?</p>
  <p>[[Yes->Result Oocystis]]<br>[[No->Question 20 Shell Plate Check]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 20</h3>
  <p><b>Q20:</b> Does the organism have an obvious <b>rigid shell/lorica</b> or <b>armored plates</b> (hard outline, opening, or plated look)?</p>
  <p>[[Yes — shell/armor->Question 21 Lorica vs Dino Plates]]<br>[[No — soft outline->Question 30 Tiny vs Medium Cells]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 21</h3>
  <p><b>Q21:</b> Does it look like a <b>round/oval shell</b> with a distinct opening (lorica), typical of Trachelomonas?</p>
  <p>[[Yes->Result Trachelomonas]]<br>[[No — dinoflagellate-like armor->Question 22 Very Large Dino]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 22</h3>
  <p><b>Q22:</b> Is it a <b>very large single cell</b> (easy to see at low power) with spindle/cigar shape?</p>
  <p>[[Yes->Result Pyrocystis]]<br>[[No->Question 23 Armored Dino Shape]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 23</h3>
  <p><b>Q23:</b> Is the armored cell <b>round/helmet-like</b> with thick outline (Peridinium-like)?</p>
  <p>[[Yes->Result Peridinium]]<br>[[No->Question 24 Small Armored Dino]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 24</h3>
  <p><b>Q24:</b> Is it a <b>small armored</b> dinoflagellate with a compact capsule look (groove visible with focus)?</p>
  <p>[[Yes->Result Heterocapsa]]<br>[[No->Question 25 Asym Dino vs Round Golden]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 25</h3>
  <p><b>Q25:</b> Does it look <b>asymmetrical</b> (one side bigger; “bean/crescent” feel)?</p>
  <p>[[Yes->Result Amphidinium]]<br>[[No — mostly round/golden-brown spheres->Result Zooxanthella]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 30</h3>
  <p><b>Q30:</b> Are the cells <b>extremely tiny</b> (dots/very short rods), hard to resolve without high magnification?</p>
  <p>[[Yes->Result Synechococcus]]<br>[[No->Question 31 Flexible Euglenid]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 31</h3>
  <p><b>Q31:</b> Does the cell look <b>flexible and shape-changing</b> (metaboly), often elongated like a “worm,” sometimes with eyespot?</p>
  <p>[[Yes->Result Euglena]]<br>[[No->Question 32 Leaf Shape]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 32</h3>
  <p><b>Q32:</b> Is the cell <b>flattened and leaf-like</b> (broad, pointed end)?</p>
  <p>[[Yes->Question 33 Phacus vs Lepocinclis]]<br>[[No->Question 34 Attached Stalks]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 33</h3>
  <p><b>Q33:</b> Is it a very flat rigid “kite/leaf” with sharp tail (Phacus-like)?</p>
  <p>[[Yes->Result Phacus]]<br>[[No->Result Lepocinclis]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 34</h3>
  <p><b>Q34:</b> Are cells clearly <b>attached by stalks</b> to debris/other organisms (clustered, anchored)?</p>
  <p>[[Yes->Result Colacium]]<br>[[No->Question 35 Green Flagellates]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 35</h3>
  <p><b>Q35:</b> Do you see a <b>single green flagellate</b> with two flagella and often an eyespot?</p>
  <p>[[Yes->Result Chlamydomonas]]<br>[[No->Question 36 Dunaliella Check]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 36</h3>
  <p><b>Q36:</b> Is it a flexible pear/elongated green flagellate (often Dunaliella-like), with a softer outline?</p>
  <p>[[Yes->Result Dunaliella]]<br>[[No->Question 37 Remaining Single Cells]]</p>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Question 37</h3>
  <p>If you’re here, your specimen may match one of these remaining single-cell options. Choose the closest visual match:</p>
  <p>
    [[Unarmored dinoflagellate (twisting motion)->Result Gyrodinium]]<br>
    [[Another euglenid not yet keyed (marine/streamlined)->Result Eutreptia]]<br>
    [[Start over->Start]]
  </p>
  <div class="actionRow">(link:"Go back")[(go-back:)]</div>
</div><div class="card">
  <h3>Likely ID: Volvox</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/f/f6/Volvox_aureus.jpg" alt="Volvox micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/f/f6/Volvox_aureus.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Volvox aureus</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/f/f6/Volvox_aureus.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> hollow sphere colony; many cells on surface; daughter colonies may appear inside.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Pandorina</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/d/df/Pandorina.jpg" alt="Pandorina micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/d/df/Pandorina.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Pandorina</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/d/df/Pandorina.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> small spherical/oval colony (often 8–32 cells); no obvious daughter colonies.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Pediastrum</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/c/c2/Pediastrum_duplex_wagner.jpg" alt="Pediastrum micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/c/c2/Pediastrum_duplex_wagner.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Pediastrum duplex</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/c/c2/Pediastrum_duplex_wagner.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> flat coenobium; star/gear outline; edge “points” visible; sheet-like arrangement.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Oocystis</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/f/f6/Oocystis_borgei.JPG" alt="Oocystis micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/f/f6/Oocystis_borgei.JPG" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Oocystis borgei</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/f/f6/Oocystis_borgei.JPG</div>
  <div class="metaLine"><b>Microscope clues:</b> oval cells often in pairs/4s within a clear envelope (“cells in a bag”).</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Chlamydomonas</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/9/9d/Chlamydomonas_globosa_-_400x.jpg" alt="Chlamydomonas micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/9/9d/Chlamydomonas_globosa_-_400x.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Chlamydomonas globosa</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/9/9d/Chlamydomonas_globosa_-_400x.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> single motile green cell; 2 flagella; eyespot may be visible as a colored dot.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Dunaliella</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/0/08/CSIRO_ScienceImage_7595_Dunaliella.jpg" alt="Dunaliella micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/0/08/CSIRO_ScienceImage_7595_Dunaliella.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: CSIRO. (n.d.). <i>Dunaliella</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/0/08/CSIRO_ScienceImage_7595_Dunaliella.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> motile; 2 flagella; flexible/pear or elongated cell; softer outline than many Chlamydomonas images.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Cylindrospermum</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/9/9f/Cylindrospermum_stagnale.jpg" alt="Cylindrospermum micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/9/9f/Cylindrospermum_stagnale.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Cylindrospermum stagnale</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/9/9f/Cylindrospermum_stagnale.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> filament with heterocysts; may show akinetes; less mucilage than Nostoc.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Merismopedia</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/e/e6/Merismopedia.jpg" alt="Merismopedia micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/e/e6/Merismopedia.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Merismopedia</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/e/e6/Merismopedia.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> flat tile/grid colony (checkerboard-like).</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Nostoc</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/d/d3/Nostoc_strains_%2810.3897-mycokeys.6.3869%29_Figure_2.jpg" alt="Nostoc micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/d/d3/Nostoc_strains_%2810.3897-mycokeys.6.3869%29_Figure_2.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Nostoc strains (Figure 2)</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/d/d3/Nostoc_strains_%2810.3897-mycokeys.6.3869%29_Figure_2.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> bead-like filaments; mucilage often visible; heterocysts may appear as larger pale cells.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Phormidium</h3>
  <img class="resultImg" src="https://commons.wikimedia.org/wiki/Special:FilePath/Phormidium_cf._laysanense.jpg" alt="Phormidium micrograph">
  <div class="creditLine"><a href="https://en.wikipedia.org/wiki/Phormidium#/media/File:Phormidium_cf._laysanense.jpg" target="_blank" rel="noopener">Image page (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Phormidium cf. laysanense</i> [Photomicrograph]. Wikipedia/Wikimedia. https://en.wikipedia.org/wiki/Phormidium#/media/File:Phormidium_cf._laysanense.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> straight/gently wavy blue-green filaments; no heterocysts; uniform threads.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Spirulina (Arthrospira)</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/e/e3/Morphology_of_straight_and_spiral_trichomes_of_A._jenneri%E2%80%99s_population_from_Tomaszowska_Reservoir_in_LM.jpg" alt="Spirulina/Arthrospira trichomes micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/e/e3/Morphology_of_straight_and_spiral_trichomes_of_A._jenneri%E2%80%99s_population_from_Tomaszowska_Reservoir_in_LM.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Morphology of straight and spiral trichomes</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/e/e3/Morphology_of_straight_and_spiral_trichomes_of_A._jenneri%E2%80%99s_population_from_Tomaszowska_Reservoir_in_LM.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> corkscrew/helical filament like a spring.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Synechococcus</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/9/99/Synechococcus_PCC_7002_DIC.jpg" alt="Synechococcus micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/9/99/Synechococcus_PCC_7002_DIC.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Synechococcus PCC 7002 (DIC)</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/9/99/Synechococcus_PCC_7002_DIC.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> very small single cells; may require high power to resolve clearly.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Amphidinium</h3>
  <img class="resultImg" src="https://commons.wikimedia.org/wiki/Special:FilePath/Amphidinium_sulcatum.jpg" alt="Amphidinium micrograph">
  <div class="creditLine"><a href="https://en.wikipedia.org/wiki/Amphidinium#/media/File:Amphidinium_sulcatum.jpg" target="_blank" rel="noopener">Image page (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Amphidinium sulcatum</i> [Photomicrograph]. Wikipedia/Wikimedia. https://en.wikipedia.org/wiki/Amphidinium#/media/File:Amphidinium_sulcatum.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> strongly asymmetrical; “bean/crescent” feel rather than a neat sphere.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Heterocapsa</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/4/4a/Kofoid_tabulation.png" alt="Kofoid tabulation diagram (used here as a visual reference)">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/4/4a/Kofoid_tabulation.png" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Kofoid tabulation</i> [Diagram]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/4/4a/Kofoid_tabulation.png</div>
  <div class="metaLine"><b>Microscope clues:</b> small armored dinoflagellate; compact “capsule” look; groove visible with careful focus.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Gyrodinium</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/a/a4/Gyrodinium_spirale.jpg" alt="Gyrodinium micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/a/a4/Gyrodinium_spirale.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Gyrodinium spirale</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/a/a4/Gyrodinium_spirale.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> unarmored/softer outline; twisting motion; less plate-like appearance than armored dinos.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Peridinium</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/9/98/FMIB_40833_Peridinium_digitale.jpeg" alt="Peridinium micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/9/98/FMIB_40833_Peridinium_digitale.jpeg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Peridinium digitale</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/9/98/FMIB_40833_Peridinium_digitale.jpeg</div>
  <div class="metaLine"><b>Microscope clues:</b> armored plates; rigid outline; groove/sulcus often visible; round/helmet-like form.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Pyrocystis (fusiformis)</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/a/aa/Pyrocystis_fusiformis.jpg" alt="Pyrocystis fusiformis micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/a/aa/Pyrocystis_fusiformis.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Pyrocystis fusiformis</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/a/aa/Pyrocystis_fusiformis.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> very large single cell; spindle/cigar shape; easy to spot at low power.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Zooxanthella (Symbiodiniaceae)</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/6/6c/Symbiodinium.png" alt="Symbiodinium (zooxanthellae) image">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/6/6c/Symbiodinium.png" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Symbiodinium</i> [Image]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/6/6c/Symbiodinium.png</div>
  <div class="metaLine"><b>Microscope clues:</b> mostly round cells; golden-brown chloroplast color; often uniform spheres.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Colacium</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/0/07/Colacium_vesiculosum_166854747.jpg" alt="Colacium vesiculosum micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/0/07/Colacium_vesiculosum_166854747.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Colacium vesiculosum</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/0/07/Colacium_vesiculosum_166854747.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> stalked/attached cells; clusters anchored to debris/organisms.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Euglena</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/5/58/Euglena_-_400x_%288999902391%29.jpg" alt="Euglena micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/5/58/Euglena_-_400x_%288999902391%29.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Euglena</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/5/58/Euglena_-_400x_%288999902391%29.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> flexible elongated cell; metaboly; eyespot may be visible; “wormy” movement.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Eutreptia</h3>
  <div class="metaLine"><b>Microscope clues:</b> streamlined euglenid; often less “wormy” than Euglena; flagella may be visible with careful focus.</div>
  <div class="creditLine"><i>No image link provided for this card.</i></div>
  <div class="apaLine">APA: (Add creator). (Year). <i>Eutreptia</i> [Photomicrograph]. Source. URL</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Lepocinclis</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/9/95/Lepocinclis_tripteris_-_400X_-_2_%2810388691043%29.jpg" alt="Lepocinclis tripteris micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/9/95/Lepocinclis_tripteris_-_400X_-_2_%2810388691043%29.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Lepocinclis tripteris</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/9/95/Lepocinclis_tripteris_-_400X_-_2_%2810388691043%29.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> oval/spindle; not as leaf-flat as Phacus; internal granules/paramylon bodies may be visible.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Phacus</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/8/8f/Phacus_utiwahigemusi001.JPG" alt="Phacus micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/8/8f/Phacus_utiwahigemusi001.JPG" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Phacus</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/8/8f/Phacus_utiwahigemusi001.JPG</div>
  <div class="metaLine"><b>Microscope clues:</b> very flat leaf/kite shape; pointed end/tail; rigid outline.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Trachelomonas</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/1/1b/Trachelomonas_sp.jpg" alt="Trachelomonas micrograph">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/1/1b/Trachelomonas_sp.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Trachelomonas</i> [Photomicrograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/1/1b/Trachelomonas_sp.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> rigid lorica/shell with distinct opening; looks “armored” compared with Euglena.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Dictyota</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/0/0b/Capo_Gallo_Dicotoma.jpg" alt="Dictyota/Dictyota-like thallus">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/0/0b/Capo_Gallo_Dicotoma.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Dictyota (Capo Gallo)</i> [Photograph]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/0/0b/Capo_Gallo_Dicotoma.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> flat blades; repeated Y-branching (dichotomous branching); tissue-like sheets rather than single cells.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Ectocarpus</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/4/46/Ectocarpus_siliculosus.jpg" alt="Ectocarpus siliculosus image">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/4/46/Ectocarpus_siliculosus.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Ectocarpus siliculosus</i> [Image]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/4/46/Ectocarpus_siliculosus.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> branched hair-like filaments; reproductive packets may appear along the filaments.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Likely ID: Sphacelaria</h3>
  <img class="resultImg" src="https://upload.wikimedia.org/wikipedia/commons/6/66/SP024_Propagule_B_20X.jpg" alt="Sphacelaria propagule image">
  <div class="creditLine"><a href="https://upload.wikimedia.org/wikipedia/commons/6/66/SP024_Propagule_B_20X.jpg" target="_blank" rel="noopener">Image credit/source (hot link)</a></div>
  <div class="apaLine">APA: Wikimedia Commons contributors. (n.d.). <i>Sphacelaria propagule</i> [Image]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/6/66/SP024_Propagule_B_20X.jpg</div>
  <div class="metaLine"><b>Microscope clues:</b> dense tuft/brush; darker tips (apical cells); tufted appearance.</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div><div class="card">
  <h3>Brown algae filament group (Bodanella / Sorocarpus / Spermatochnus)</h3>
  <div class="metaLine"><b>Microscope clues:</b> branched brown filaments/tissue where ID often depends on reproductive structures and branching details.</div>
  <div class="creditLine"><i>No image link provided for this card.</i></div>
  <div class="apaLine">APA: (Add creator). (Year). <i>Brown algae filament group</i> [Photomicrograph]. Source. URL</div>
  <div class="actionRow">(link:"Go back")[(go-back:)] <span class="sep">|</span> [[Start over->Start]]</div>
</div>





  