REVISION OF EPILOBIUM. 85 
tracted above the base, areolate or low-papillate: coma pale, falling 
easily.— Mostly slender annuals with terete stems more or less glandular- 
pubescent above and with somewhat exfoliating bark at base, and rather 
firm nearly veinless leaves except in broad-leaved forms of paniculatum. 
7. E. panicutatum, Nutt.— A foot or two high, loosely 
dichotomous, mostly glabrate at base; leaves 30 to 50 
mm. long, chiefly alternate and fascicled in the axils, 
lanceolate or linear-lanceolate, often somewhat folded 
along the midrib, acute, rather sparingly denticulate, taper- 
ing to a slender winged base, gradually passing into the 
smaller bracts; flowers rather remote, toward the ends of 
the ascending branches, erect, the bracts often carried up 
on their peduncles ; calyx-tube very narrowly funnel-form, 
3'to 6 mm. long; petals about 8 mm. long, violet ; capsules 
fusiform, falcate, ascending, about 20 mm. long; seeds 1 x 2 
mm., low papillate.— Torr. & Gr. Fl. i. (1840), 490; 
Watson, Index, 366; Haussknecht, Monogr. 246, pl. 2, f. 
27 ; Barbey & Cuisin, pl. 8; Coulter, Rocky Mt. Bot. 102. — 
San Diego county, California, to Vancouver Island, Ari- 
zona and Colorado, extending eastward through British 
America to the Canadian shore of Lake Huron ( Macoun).— 
Specimens examined from Vancouver Island and various 
points in the Rocky Mountains of British America, Washing- 
ton, Oregon, California, Nevada, Arizona, Utah, Colorado, 
Idaho, and Montana, as well as the Lake Huron specimen of 
Macoun. — Plate 8. 
Quite variable in robustness, length of calyx-tube, size of 
flowers (sometimes not over 3 mm. long) and leaves, and 
in the staring pubescence, which sometimes stops abruptly 
a short distance below the ovary,-while some specimens are 
_ perfectly glabrous and others very glandular throughout. 
Var. gucunpuUM (Gray). — Usually somewhat glaucous, 
less dichotomous, and with shorter and more thyrsoid in- 
florescence; leaves rather firmer; petals as much as 20 
mm. long and rather widely expanding, deep violet; style 
frequently exserted; capsules erect and mostly crowded : 
otherwise like the type, which almost passes into it through _ 
