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Fig. 2. A, Polysiphonia flaccidissima var. flaccidissima , branch apex. B, Polysiphonia flaccidissima var. 
lopi, branch apex. C, Polysiphonia flaccidissima var. iki, branch apex with young lateral branch and young 
cystocarp. D, Polysiphonia hancockii, habit sketch. E, Polysiphonia hancockii, branch with cystocarp. F, Poly- 
siphonia hawaiiensis, branch apex with spermatangial stichidia. G, Polysiphonia herpa, prostrate branch with 
rhizoid showing multicellular apex. 
