Spermothamnion gorgoneum (Mont.) Bornet

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Phycotheca Boreali-Amerlcana. Collins, Holden, and Setcbell.
441. Spermothamnion gorgoneum (Mont.)
Callilhamnion gorgoneum, Montagne in Kuetzing, Tab. Phyc., Yol.
XII, p. 1, PI. II, 1862.
Mazl & Schramm, Algues de Guadeloupe, p. 141,1877.
On Codinm tomentosum, Jamaica, July, 1894.
Mrs. C. E. PEASE and Miss E. BUTLER.
Both cystocarps and polyspores have been found in Jamaica speci-
mens ; in the former the spores have thick cell walls and are arranged
as in Spermothamnion; the involncre is only slightly developed. The
poly spores are quite numerous, in an ovate or snbepherical mass, occu-
pying not more than half the diameter of the large, hyaline sporangium.
F. S. COLLINS.
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