76 ВАМСТАСЕАЕ 
so far аз we have observed, more than І mm. long, are 15-35 м 
in diameter, and simple or with 1-3 branches; the cells are varied 
in form, but are often short and disc-like as represented in Rosen- 
vinge’s fig. 15B (Kgl. Danske Vidensk. Selsk. Skrift. УП. 7: 76. 
1909), but are even more often plano-convex, biconcave, or con- 
cavo-convex than there shown, the cells of these forms commonly 
alternating with rounder cells from which they have evidently 
been cut off in cell division; the cells are usually in a single series, 
but are occasionally in two series, and rarely in three or four 
irregular series, but the last-mentioned forms must be carefully 
discriminated from other Bangioid species (Erythrotrichia poly- 
morpha, etc.) with which it grows associated. In their small size 
and few branches, the Peruvian plants are evidently closer to the 
original Bangia Alsidii, as described and figured by Zanardini, than 
to the original Bangia elegans of Chauvin. The Peruvian speci- 
mens in several respects suggest the Gulf of Naples plant that 
Berthold has proposed to keep distinct under the name Goniotri- 
chum dichotomum Berthold * non Kiitzing, but we have never seen 
in them so many as eight cells in cross section and have never 
observed any approaching the transverse multiplication of cells 
figured by Reinsch (Contrib. Alg. et Fung. 40. pl. 15) for the fully 
developed condition of his Stylonema Cornu-cervi, of which Ber- 
thold’s Goniotrichum dichotomum has been supposed to be а 
synonym. 
GONIOTRICHUM. CORNU-CERVI (Reinsch) Hauck, in Кађепћ. 
Krypt.-Fl. 2: 510. 1885 | 
Stylonema Cornu-cervi Reinsch, Contrib. Alg. et Fung. 40. pl. 15. 
1875. (As S.“ Cornu Cervi.’’) 
On Cladophora and Chaetomorpha, with Acrochaetium, Erythro- 
trichia polymorpha, and other epiphytes, in beach drift, La Punta, 
region of Callao, January 25, 1907, Coker 38 p.p. 
Plants reaching a height of 0.85 mm., mostly simple but often 
once forked and occasionally two or three times irregularly dichot- 
omous, 20-65 и in greatest width, soon 2 or 3 cells wide, the cells 
commonly in regular and often spaced longitudinal rows as if 
*Die Bangiaceen des Golfes von Neapel und der angrenzenden Meeres-Ab- 
schnitte, 26. 1882 
