(259) 
shorter than the pahtanl on sporocarps 0.7-0.84 mm. long, 0.45- 
0.53 mm. wide; odspores 0o.5-0.6 mm. long, 0.35-0.4 mm. wide, 
with 6 or a striae; whorl of crown-cells 0.1-0.1 
oO. ee at base, the individual cells lanweolaté to ovate, 
usually connive 
Type fear ‘Caienihe Baden, Germany. 
Distribution: Vermont to Mi naceata and Indian Territory; 
Europe, Asia, and Africa. 
Illustrations: Am. Nat. 16: 362. f.2; 367. f.9; Bisch. Krypt. 
Gewach. dl. 2, f. 5, a8 C. Braunii;-loc. cit. f. 7, as C. coro- 
nata ; Kitz. Tab. Phyc. 7: Ad. 237, f. a-e; Migula, Ce Deutsch. 
Omi Schw. f. &7-&}; Migula, Ce Char. Eur. f. 68, 69; 
Woods, Flor. Neb. 1: £2. 30. f. 2, 4. 
Exsiccatae: Allen, Char. Am. Exsicc. 72. 
The common American species of this group is C. Schweznztzit, 
typical specimens of which are quite distinct from the European 
Brauntt in several important characters. here are also 
puzzling intermediate forms, but most of these are referable to 
. Schweinttzit, to which also belong several of the plants placed 
by Braun and Allen under C. Braunz?. There remain a few of 
northern distribution which seem practically identical with Euro- 
pean specimens. The southern hitherto assigned to this species are 
here somewhat tentatively separated. 
3. CHara Scuweinirzu A. Br. Ann. Sci. Nat. II. 1: 353. 1834 
C. coronata Schweinitzii A. Br. Flora 18: 60. 1835. 
C. Braunii foliolosa Wallm. Kongl. Vet.-Akad. Handlingar 
1852: 286. 18 4. 
Monoecious: variable in size and habit, 0.1-1.5 m. high, 0.7-1.3 
mm. in diameter, usually gala bright- to olive-green, entirely 
unincrusted or much more rarely lightly or heavily i incrusted, never 
corticated, and therefore without ape: -cells: stipulodes forming a 
single whorl at each node, alternate with and equal in number to the 
leaves, usually 1.5-3.5 mm. long, and about 0.5-1.5 mm. wide: 
leaves 8-11 in a whorl, 0.8—5 cm. long, usually exceeding the cor- 
responding stem-nodes, containing 4-6 internodes, besides the short 
terminal cell; leaflets usually verticillate, the posterior shorter but 
nearly always oe the anterior bracteole $ 1.3~2.5 mm. long, 
slightly exceeding to three times as long as the sporocarps, those at 
sterile nodes usually much shorter, often very small : antheridia and 
odspores 0.52-0.65 mm. long, 0.33-0.4 mm. wide, with Q-II striac ; 
