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
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Dichothrix<br />
Classification: Cy<strong>an</strong>obacteria (Family<br />
Rivulariaceae)<br />
General habit: forming small mats or feathery tufts<br />
on a variety <strong>of</strong> surfaces in streams, sometimes<br />
growing only as solitary pl<strong>an</strong>ts, yellowish-brown in<br />
color<br />
Species in Hawai‘i: D. baueri<strong>an</strong>a, D. fusca<br />
Isl<strong>an</strong>d distribution: Maui, Hawai‘i<br />
Distinguishing features: filaments tapering slightly<br />
along their length, heterocysts usually at the larger<br />
ends <strong>of</strong> filaments (although they c<strong>an</strong> be present in<br />
the central areas <strong>of</strong> the filaments as well), usually 2-<br />
6 filaments contained within a single sheath for at<br />
least part <strong>of</strong> their length<br />
Compare with: Scytonema, Tolypothrix<br />
12<br />
A. A piece <strong>of</strong> <strong>an</strong> epilithic mat <strong>of</strong> Dichothrix. Scale<br />
bar = 2mm. B. Filaments enclosed in a single<br />
sheath for part <strong>of</strong> their length. Scale bar = 20µm.<br />
C. Basal heterocysts on Dichothrix filaments.<br />
Scale bar = 10µm.
Change language