( 262 ) 
nodes, except that the former often have a short additional leaflet or 
pre-bracteole on each side of the odégonium, as in C. caxescens, these 
usually 0.25-0.4 mm. long: antheridia 0.31-0.34 mm. in diameter ; 
0.72—-0.88 mm. long, 0.4-0.5 mm. wide; oéspores 
oval, .58-0.68 mm. long, 0.33-0.37 mm. wide, with 10-12 incon- 
spicuoue ae whorl of crown-cells -I-0.14 mm. high, 0.2-0.22 
mm. wide at t base, the individual mi somewhat connivent or be- 
coming pe "apparently easily deciduou 
Type — Red Deer Lakes and ne west of the Saskat- 
chewan, Albert: 
Distribution : ies to South Dakota and California. 
Illustrations: Bull. Torrey Club doc. czt.; Woods, Flor. Neb. 
I: pl. 34. 
Exsiccatae: Allen, Char. Am. Exsicc. 76. 
7. CHARA CANESCENS Loisel. Not. Fl. France 139. 1810 
C. crintta Wallr. Annus Bot. 190. 1815. — Allen, Bull. Torrey 
Club 2: 10. 1871; 9: 40. pl. 78. 1882. — Halsted, Proc. Bos- 
ton Soc. Nat. Hist. 20: 181. 1879.— A. Br. Fragm. Monogr. 
Char. 137. fl. 7. f. 222, 222. 1882. 
C. crinita americana Allen, Char. Am. pi. 2. 1879; 5. pl. 2. 
O. 
Dioecious, antheridia very rare on European specimens, and as 
yet unknown on American : 6-15 cm. high, dark-green, or becoming 
ce) 
slightly ; stems 0.28—0.44 mm. in diameter, singly corticated, the cor- 
tical cells usually short and parallel to the direction of the stem, the 
cortical node-cells normally bearing three spine-cells, o.4-1.6 mm. 
long, 0.07—0.09 mm. wide, obtuse to subacute at the apex, often hid- 
ing the stem, much more rarely somewhat distant : stipulodes form- 
aS a double whorl at each node, those in the upper whorl 0.48-0.75 
m. long, 0. ee og mm. wide, those in the lower equally wide but 
eae 0.25-0.53 mm. long: leaves S-1oin each whorl, 5-§ mm. long, 
singly ee except the uncorticated tip, which resembles the 
ultimate whorl of leaflets by which it is surrounded; leaflets and 
bracteoles similar to one another, 0.5-1.4 mm. long, usually 6 in 
smaller than the others, becoming at the extreme reduction only one- 
fourth the length of the mature sporocarps: sporocarps 0.7-0.8 
mm, long, 0.42~-0.5 mm. wide; odspores elliptic or obovate-elliptic 
0.53-0.63 mm. long, o. 310-3 8 mm. ve with 9-11 striae; whorl 
of crown-cells 0.08—o.0 . high, 0.13-0.18 mm, wide at base, 
the individual cells conniv ae or satay spreading. 
Type locality: Toulon, France. 
