Stream macroalgae of Hawai`i: an identification guide - Hawaii.gov
Stream macroalgae of Hawai`i: an identification guide - Hawaii.gov
Stream macroalgae of Hawai`i: an identification guide - Hawaii.gov
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Compsopogon<br />
Classification: Rhodophyta (Family<br />
Compsopogonaceae)<br />
General habit: br<strong>an</strong>ched filaments, becoming<br />
corticated in mature regions, typically bluish-gray to<br />
light greenish-gray in color, c<strong>an</strong> form dense mats,<br />
attached to rocks or vegetation<br />
Species in Hawai‘i: C. coeruleus (most previous<br />
reports as Compsopogonopsis leptoclados, which is<br />
now in synonymy), Compsopogon sp.<br />
Isl<strong>an</strong>d distribution: Kaua‘i, O‘ahu, Maui, Hawai‘i<br />
Distinguishing features: br<strong>an</strong>ched filamentous<br />
alga, the main axis <strong>of</strong> mature pl<strong>an</strong>ts has a “beadlike”<br />
appear<strong>an</strong>ce, main axis covered with cortical<br />
cells (Fig. F), reproduction through production <strong>of</strong><br />
monospores (Fig. F)<br />
Compare with: Cladophora<br />
A. A rock in a small stream covered with bluishcolored<br />
Compsopogon filaments. Scale bar = 20cm.<br />
B. Br<strong>an</strong>ched filaments <strong>of</strong> Compsopogon as viewed<br />
under a dissecting microscope. Scale bar = 250µm.<br />
C. A mat <strong>of</strong> Compsopogon filaments viewed under a<br />
dissecting microscope. Scale bar = 3mm. D.<br />
Br<strong>an</strong>ched filaments seen under a compound micro-<br />
39<br />
scope. Scale bar = 100µm. E. Cortication on the<br />
larger filaments. Scale bar = 100µm. F. A cortical<br />
cell producing two monospor<strong>an</strong>gia. Scale bar =<br />
50µm.
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