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PACIFIC SCIENCE, VoL XXII, January 1968 
Fig. 7. A, Polysiphonia scopulorum var. villum, young plant with shorter segments than usual. B, 
Polysiphonia scopulorum var. minima, paired and long-stipitate spermatangial branches. C. Polysiphonia scopu- 
lorum var. macrotrichia, prostrate branch with short erect branch bearing huge trichoblasts (from the type 
slide) . 
