Spermothamnion gorgoneum (Mont.) Bornet

Phycofheca Eoreali-Americana. Collins, Holden, and Setchell.
441. Spermothamnion gorgoneum (Mont.)
Callithamnion gorgoneum, Moritagne in Kuetzing, Tab. Phyc., Vol.
XII, p. 1, PI. II, 186-2.
Maz^ & Schramm, Algucs de Guadeloupe, p. 141,1877.
On Codium 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 involucre is only slightly developed. The
polyspores are quite numerous, in an ovate or subspherical mass, occu-
pying not more than half the diameter of the large, hyaline sporangium.
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