Halsted.) 188 (March 5, 
are formed. The species seems to be as wide-spread as C. fetida; 
and according to Alex. Braun often grows with it. 
In Herb. Gray, No. 4, 6 and 9 of Mr. Wright’s from New Mexico 
represent the species. It is mentioned by Mr. Peck, in the 23d Re- 
port of the Botanist of New York, as being found in Cedar Lake, 
Herkimer Co., N. Y. 
Chara fragilis Desv. 
Chara fragilis Desv., A. Braun in Flora, 1835, 1, 68, Schweiz., 
Char., 2; Wallman, Char., 101; Kiitz., Phyc. Germ., 257; Sp. Alg., 
p. 521; Coss. and Germ., Fl. Env. Par., 680; Babington, Man. Bot., 
11, 422; A. Braun in Krypt. Fl. Schlesien. Chara pulchella Willd., 
Agardh, Syst. Alg., 129. 
Exsiccatae : Braun, Raben. and Stiz., Char. Exsic., 13. 
Illustrations: Engl., Bot. Tab., 2767; Coss. and Germ., Atlas, Tab. 
38, Thuret., Ann. Se. Nat., m1, 18, Tab. 8 and 9. 
Plants monecious, slender, incrusted with lime, corticating cells 
long, three times the number of the leaves in the whorl next above, 
spines undeveloped; whorls numerous, 7—9 leaved; leaves closely 
corticated except 1-2 extreme articulations and ending in an obtuse 
point; bracts mucronate, long as sporangium. Sporangia ovoid, 13-15- 
striate, crown long, conical, spore black. 
Throughout Europe, next to C. fetida, this is the most common 
species. It has a number of well-marked varieties, some of which 
are much more common in the United States than the specific type. 
In Herb. Gray, Monterey, Cal., (Bolander). It has also been found 
at Norfolk, Conn. (Dr. Robbins); Pleasant Pond, Essex Co. (Robin- 
son), and Litchfield Lake (Allen). 
Var. delicatula A. Br. 
Chara fragilis, var. delicatula A. Braun in Krypt. Fl. Schlesien, 
411. Chara delicatula Agardh, Syst. Alg., 129. 
Plants but little incrusted with lime, dark green; joints of leaves 
often dark; bulblets present. 
The absence of calcareous incrustation and more slender habit 
readily distinguishes this from the specific type. Those bearing 
bulblets have sometimes been placed as a sub-variety ; bulbulifera. 
Var. major longifolia A. Br. 
Chara fragilis var. major longifolia A. Br. Chara Hedwigu 
Agardh, Syst. Alg., 129. Chara fragilis var. Hedwigit Wallman, 
Char., 84; Kiitz., Phyc. gen., 319. Chara fragilis var. elongata 
Kiitz., Sp. Alg., 521. 
