56 Engelmann and Gray, Plante Lindheimeriane. 
elayey bottom of clear rivulets, in the prairies between the 
Brazos and Colorado. July, and the whole year round.’ 
#* No. 151. Monarpa Linpneimertr of this enumeration 
must be the same as M. scasra, Beck, in Sill. Jour. X. p. 
260, which name should therefore be adopted. } 
1 In addition to the enumeration of the North American Chare, published in 
Silliman’s Journal, Vol. XLVI. p. 92, (January, 1844,) we record the following 
notices, caiatttsieticel by Professor Braun : 
Mr. Lindheimer has sent from Texas specimens of Chara fievilis, Linn. ? (incom- 
plete specimen,) and of Ch. tenuissima, Desv. This last, as well as the specimens 
from Massachusetts, may be distinguished as var. Americana; the whorls are less 
densely glomerate, but more approximate than in the European form. 
Chara polyphylla, A. Br., is a very polymorphous plant, occurring in many differ- 
ent forms in America, Asia, and the Sandwich Islands. Professor Braun distin- 
guishes seven subspecies. 
a. Ch. polyphylla Michauxii (Ch. polyphylla, A. Br. in Regensb. Bot. Zeit. 
1835, p. 70; Ch. Michauzii, A. Br. in Sillim. Journ. 1. e. No. 11; Ch. capillata, 
Michaux in herb. Jussieu; Ch. Aaitensis, Turpin, Dict. sc. nat. Atlas.) Ohio, 
(Michaux, Dr. Frank); Missouri, (Dr. Engelmann); Texas, (Mr. Lindheimer) ; 
Hayti, (Turpin, 1796.) This is the stoutest, and also the most northern of all 
species and subspecies of the remarkable group of Gymnopode, A. Br. There are 
five species now known, belonging to this group ; and of these Ch. pol yphylla i is the 
‘mos ‘polymorphous, and widest spread species. — The Gymnopode are distin- 
aving the lowest (often very short) joint of the otherwise coated leaves 

pa 
Ke guished t 


ommonly cal ak yerticillated branchlets) naked, or destitute of the coating. 
ee Ch. polyphylla guadeloupensis, (Ch. indica, Bert.) Guadeloupe, Bertero. More 
slender, with smaller, more elongated seed vessels (sporangia) and still shorter bracts. 
c. Ch. polyphylia ceylanica, (Ch. zeylanica, Klein in Willd.) Ceylon, Pondi- 
cherry, Madras, etc. 
d. Ch. polyphylla javanica. 
e. Ch. polyphylla Muhlenbergii, (Ch. foliosa, Muhlenb. in Willd. ; ; Sillim. Journ. 
l.c., p. 93, No. 10.) Pennsylvania, Muhlenberg. Very near Sileaekig C. ceylan- 
ica, aid distinguished from a. Michauzii, by the bracts being much longer than the 
sporangia, while they are shorter in Michauzit. 
f. Ch. polyphylla Humboldtiana, (Ch. compressa, H. B. K.) New Andalusia, 
Humboldt. A variety with some of the upper joints of the leaves destitute of the 
coating. 
g. Ch. polyphylla armata, (Ch. urmata, Meyen, Reisebesch.) _ Sandwich Islands, 
Meyen. Distinguished by the stronger spines, and also mostly naked upper joints 
and smaller seed vessels. 
A second species, distinct from Ch. polyphylia, but also belonging to Gymnopode, 
has been collected by Dr. Engelmann, in lakes in the bottom lands of the Missis- 
sippi, near Saint Louis ; it is called by Professor Braun 
Ch. sejuncta, a more slender and greener plant than the last, but principally dis- 
tinguished by the seed vessels (sporangia) and globules (often called anthers) being 
always found on different joints of the leaves (or branchlets,) never as in most other 
species, together on the same joint. — Martius has collected the same species in 
Brazil ; the North American form is larger, and more slender, and has bracts shorter 
‘than the seeds; and may therefore be called var. brevibracteata, and the Brazilian 
variety, longibracteata. 
