Halsted. } 182 [March 5, 
consisting of 6-8 leaves; leaves with 6-7 articulations corticated to the 
apex and ending in a whorl of bracts; bracts acute, 1-1.5 times the 
length of the sporangium. Sporangia numerous, large,long and nar- 
row, 11-13-striate, crown short, spore jet black. 
This is a rare species in the United States, the only specimens we 
have seen having been collected by Dr. Robbins near Uxbridge, Mass. 
Mr. Allen states that it has been found at Montauk Point, Long 
Island. 
Nordstedt and Wahlstedt’s Char. Exsic. is rich in this species, but 
no male plants are present, and the same is the case with Braun, 
Raben. and Stiz. collection. 
The Uxbridge plants, as also those mentioned by Mr. Allen, are all 
female, showing that with us the species is perhaps parthenogenic as 
it is supposed to be in Europe. 
The species is subject to considerable variation. Many of the 
Scandinavian specimens are much smaller than ours, profusely cov- 
ered with spines, bright green and almost velvety in appearance, and 
altogether among the most attractive of the species. Among the most 
noticeable forms are C.. condensata a contracted form, and C. perpusilla 
(Chara pusilla Flork) which is thoroughly fruited, and not over an 
inch in length. Their “forma laxior” most nearly agrees with the 
American representatives. The species is a near relative of C. 
aspera, but may be distinguished from it by the upper articulations 
of the leaves, those of the latter not being corticated. 
Chara ceratophylla Wallr. 
Chara ceratophylla Wallroth, Fl. Crypt. Germ., 11, 113; Sprengel, 
F]. Halensis, 438; A. Braun, in Flora, 1835, 1, 65; Schweiz. Char., 
18; Agardh, Syst. Alg., 128; A. Braun, in Krypt. Fl. Schlesien, 
404. Chara tomentosa et ceratophylla, Kiitz., Sp. Alg., 526; Wallman, 
Char., 89. . 
Exsiccatae: Braun, Raben. and Stiz., Char. Exsic., 8. 
Illustration: Fl. Dan. x, Tab. 1656. 
Plants diecious, very large size, incrusted with lime, stipular ring 
large and spreading ; stem 1.0-1.4 mm., broad, bearing many long 
loosely hanging spines; whorls remote, consisting of 5-8 leaves; 
leaves 6-8 cm. long, corticated to near the apex, lower articulations 
fertile and provided with long bracts exceeding the length of the 
sporangium. Sporangia .55-.65 mm. long, crewn contracted, spore 
black. 
