(274) 
Distribution: Central New York and Welland County, Ontario, 
to western Lake Erie and southeastern Illinois. 
Exsiccatae: Allen, Char. Am. Exsicc. 26. 
22, Chara mexicana (Allen) 
C. hydropitys mexicana Allen, Bull. piel Club 20: 120. 1893. 
Monoecious : ae cm. high, dark-green, slightly incrusted; 
stems 0.3-0.46 mm. in dia meter, essentially triply corticated, sec- 
ene! See alls aie developing more or less on both sides of 
the primary, though usually very unequally in the two longitudinal 
directions, often quite irregular, when most regular appearing as if 
doubly corticated except opposite the cortical node-cells ; spine-cells 
scattered, a variable, linear-lanceolate to ovate or triangular, 
0.05-0.32 mm. long, 0.04-0.07 mm. wide, acute at the apex: stipu- 
lodes fae a single whorl at each node, twice the number of the 
leaves, 0.2-0.25 mm. long, 0.06 mm. wide, linear-lanceolate, acute 
or acuminate: leaves 9 or ro in a whorl, 9-10 mm. long, composed 
of 5 or 6 internodes, of which the lowest one and the terminal one 
or two are ce aay and the 3 (rarely 4) intervening wee cor- 
ticated, the lowest nternode 1.1 -1.5 mm. long, 0.22-0.26 mm. 
wide, the eee ae corticated internode of nearly the same dimen- 
sions; leaflets at any node nearly equal, 0.66-0.86 mm. long, 0.09- 
0.12 mm. wide, linear-lanceolate, acute, as bracteoles about one 
and a half times as lon the mature paras : antheridia 0.23- 
0.25 mm. in diameter; sporocarps 0.57-0.6 mm. long, 0.36-0.38 
mm. wide; odspores o 2 ear 0.24 mm. wide, 
with ro striae; whorl of crown-cells short, 0.07-0.09 mm. high, 
0.I-0.12 mm. wide at base, the individual cells ovate, ascending. 
Type collected in a still pool of a mountain brook, north Mexico, 
by C. G. Pringle, November, 1886. 
Distribution: Only known from original collection. 
Exsiccatae: Allen, Char. Am. Exsicc. ¢6. 
23. Chara Liebmanni sp. nov. 
C. hydropitys perfecta A. Br. Fragm. Monogr. Char. 133. 1882. 
onoecious : Seis in sae tothe South American C. hydropz- 
thys Rchb., 12.5-18 cm. high; stems 0.4-0.42 mm. in diameter, 
the lowest nodes ee spherical, destitute of leaves, the cortex- 
cells little twisted, difficult to count, apparently very similar to 
those of the others of the group; spine-cells acute, about 0.05 mm. 
wide, the length of the longest lower ones greater than the diameter 
of the stem: “stipulodes forming a single whorl, twice the number 
of the leaves, space thicker than the spine-cells, similar o ee 
leaflets : leave es mostly 10 in a whorl, usually containing 6 inter- 
nodes, of which the lowest is here 0.3 mm. thick and pee 
