Halsted.) so | 180 [March 5, 
3. Genus LyconorHAmnus Rupr. 
Stipular ring simple; bracts only on upper side of leaves. An- 
theridia by the side of the Sporangia. 
: No members of this small genus have been found in tiie United 
tates. 
4. Genus CHARA Vaill. em. A. Br. 
Stipular ring often double, bracts usually on all sides of the leaves. 
Antheridia below the Sporangia. 
SYNOPSIS OF THE SPECIES OF CHARA. 
I. Without cortication. 
a. Plants very large. C. coronata Ziz. 
II. With cortications. 
A. Dicecious. 
1. Leaves entirely corticated. C. crinita Wallr. 
2. Leaves not entirely corticated. 
a. Plants very large; diplostichous.1_ C. ceratophylla Wallr. 
b. Plants rather small; triplostichous. C. aspera Willd. 
B. Monecious. 
1. Leaves having a naked basal internode. 
a. Naked internode one-third length of leaf. 
C. Robbinsii n. sp. 
b. Naked foot very short. C. gymnopus A. Br. 
2. Leaves having no naked basal internode. 
a. Corticating cells diplostichous. 
«. Spines between the furrows of the stem. 
C. fetida A. Br 
8. Spines not between the furrows of the stem. 
C. contraria A. Br. 
b. Corticating cells triplostichous. C. fragilis Desv. 
Chara coronata Ziz. 
Chara coronata Ziz. A. Braun, in Flora, 1835, 1, 95; Char. 
Afrik., 825; Kiitz., Sp. Alg., 520; A. Braun, in Krypt. FI. 
Schlesien, 403. 
Illustration: Kiitz., Tabulae Phycol., vir, Tab. 69, 1. 
Plants monecious, without cortication, one to three feet long; stems 
.50-.75 mm broad, bright green, without incrustation, stipular ring 
simple; leaves with 6-10 articulations ending in a crown of 3-5 
1 Diplostichous — signifying that the rows of corticating cells are twice as many 
as the leaves in the whorl next above. Triplostichous, when the rows are three 
times a8 many. 
