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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Nostochopsis<br />
Classification: Cy<strong>an</strong>obacteria (Family<br />
Nostochopsaceae)<br />
General habit: bright blue-green globular colonies,<br />
composed <strong>of</strong> filaments encased in mucilage, colonies<br />
retaining their shape when removed from the water<br />
Species in Hawai‘i: N. lobatus, N. radi<strong>an</strong>s<br />
Isl<strong>an</strong>d distribution: Kaua‘i, O‘ahu, Maui<br />
Distinguishing features: macroscopically similar to<br />
Nostoc, but filaments br<strong>an</strong>ching, appears as bright<br />
blue-green to grass-green colonies in streams,<br />
usually attached to rocks, heterocysts c<strong>an</strong> be either<br />
apical, or both intercalary <strong>an</strong>d apical (depending on<br />
the species)<br />
Compare with: Nostoc, Chaetophora<br />
17<br />
A. An individual colony <strong>of</strong> epilithic Nostochopsis.<br />
Scale bar = 2mm. B. Compound microscope view<br />
<strong>of</strong> filaments arrr<strong>an</strong>ged in a colony. Scale bar =<br />
20µm. C. Br<strong>an</strong>ched filament with heterocysts.<br />
Scale bar = 20µm. D. Intertwined filaments <strong>of</strong><br />
Nostochopsis. Scale bar = 15µm.
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