280 PROCEEDINGS OF THE AMERICAN ACADEMY. 
Yellowstone Park have been confidently referred to this variety by 
Hollick and Britton, 1. ¢., and Parry’s no. 41 from Northwestern 
Wyoming is doubtless the same. 
C. alpinum, L. Densely silky: stems weak, matted: leaves 
elliptic-ovate, in the typical form only 4-5 lines long: petals notched 
at the apex, 14-2 times the length of the sepals. — Spec. 438; Torr. 
& Gray, Fl. i. 188; Regel, Ost-Sib. i. 433, 434. 0. lanatum, Lam. 
Encycl. i. 680. C. latifolium, Greville, Mem. Soc. Wern. iii. 429. 
C. vulgatum, Hook. f. Arc. Pl. 288 in part. ? C. latifolium, Hart., 
Trimen’s Journ. of Bot. ix. 205.— Arctic America from Greenland 
to Alaska, also in Labrador, the Hudson Bay region, and upon the 
Rocky Mountains of British America. (Europe and Asia.) The 
following varieties extend farther southward. 
Var. Beeringianum, Recet. Hirsute and less silky-villous, 
somewhat viscid above: leaves smaller, oblong. — Ost-Sib. i. 439. 
CO. Reeringianum, Cham, & Schlecht., Linnza, i. 62. C. vulgatum, val» 
Beeringianum, Fenzl in Ledeb. Fl. Ross. i. 409.-— Alaska to the 
Rocky Mountains of Colorado and Arizona. 
Var. Fischerianum, Torr. & Gray. Hirsute, taller, Sek 
inches or even more than a foot in height : leaves rather thick, elliptie- 
lanceolate or oval-lanceolate, acute or acutish, an inch or more 1? 
length: capsule 1}-2 (or rarely 3) times the length of the calyx. — 
Fl. i. 188; Regel, 1. c. i. 438. © rigidum, Ledeb. Mem. Petr. 
v. 538. ©. Fischerianum, Seringe in DC. Prodr. i. 419. . eulge 
tum, vars. grandiflorum and macrocarpum, Fenzl in Ledeb. Fl. set 
i. 409, 410. To judge from the figure in the Calques des Dessins 
C. stellarioides, Mog. should be referred here also, having been placed 
by Seringe probably through error in § Strephodon. — A stout variety 
passing to C. arvense, var. maximum, but with broader more elliptic 
ovate leaves and longer capsules. Alaska to Humboldt Co., Calif, 
Rattan. (Siberia, Japan.) The leaves are thicker and the sepals 
more pubescent and acute than in C. pilosum, Ledeb., to which 1t 18 
also nearly related. 
_ Var. glabratum, Hook. Leaves and calyx nearly smooth. — 
Parry’s 2d Voy. 390; FI. Bor.-Am. i. 104.— Arctic America with 
the pubescent forms. (N. Eur.) 
§ 3. Dicnopon, Bartl. Styles normally 3: teeth of the capsule 
erect or slightly spreading, not circinate-revolute. — Endl. Gen. 970.— 
Our species with symmetrical capsule and short glabrous leaves. 
C. trigynum, Viti. Perennial, with stems weak, spreading, yeaa 
what matted, smooth or glandular-pubescent, loosely 2-3 flowered: 
