EPILOBIUM. 



OXAGRACE.E. 223 



*- Capsule linear-fusiform; many seeded; seeds beakless. Rather 

 tall plants with ample conspicuously-veined chiefly opposite leaves 

 and large flowers with short and open calyx tube. 



E. luteum Pursh259. Stems slender a foot or two high, nearly simple: 

 glabrate below except along the elevated lines decurrent from some of the 

 nodes : leaves one to three inches long, ovate or elliptical to broadly lanceo- 

 late, acute or acuminate, sinuate-toothed, sessile or when large obliquely 

 tapering to a winged petiole, slightly fleshy: inflorescence more or less 

 glandular-pubescent; the flowers at first nodding, not very numerous, in 

 the axils of the somewhat crowded and frequently reduced upper leaves ; 

 petals bright yellow 8-9 lines long, style frequently exserted, its obconical 

 apex mostly deeply 4-parted : capsule long stalked more or less puberulent ; 

 seeds obovoid very acute at base, smooth or slightly areolated, less than a 

 line long ; coma at length reddish. ( >regon to Alaska. 



+- +- Capsules rather short ; subclavate-fusiform ; few-seeded : rather 

 low and slender stemmed, more or less cespitose plants, usually some- 

 what shreddy at base. 



■** Leaves rather broad; flowers large, rose-purple; style shorter than 

 the petals. 



E. rigidum Hauss&n. Bot. Zeitschr. xxix, 51. Stems decumbent, 4-8 

 inches long, glabrous and rather glossy at base, glandular-pubescent 

 above : leaves 8-16 lines long, the upper more or less attenuate, lanceolate to 

 nearly oboyate, acute, entire, cuneately narrowed into short winged petioles, 

 glabrous and very glaucous, firm with mostly inconspicuous lateral veins : 

 flowers rather few in the axils of the reduced upper leaves which are often 

 adnate to the base of the peduncles; ovary more or less densely white 

 pubescent; calyx cleft nearly to the base; petals 7-10 lines long; stigma very 

 large, its surface pilose-papillate; seed smooth. Eastern base of the 

 Coast range, Josephine Co., Oregon. 



Tar. canescens. Trel. Sp. Epilob.83. Densely velvety-canescent through - 

 out. With the type. 



++ ++ Leaves relatively narrow, flowers rather small; cream-colored, 

 style exserted; seeds nearly obconical, closely low- papillate. 



E. suffruticosum Nutt. T. & G. Fl. i, 488. Stems woody and intricately 

 much branched at base, a span high, minutely canescent throughout or at 

 length glabrate below : leaves numerous, less than 10 lines long, mainly 

 opposite, broadly lanceolate, acutish, entire, narrowed below but hardly 

 petioled, thick, with inconspicuous veins : flowers rather few, in the axils of 

 the scarcely reduced upper leaves ; calyx-tube broadly funnel-form ; petals 

 3-4 lines long ; capsule an inch long, short-stalked : seeds a line or more 

 long; coma long and very dingy. Oregon to northwest Montana and the 

 Yellowstone Park. 



* * Stigma more or less 4-cleft in the larger flowers, usually sub- 

 entire in the smaller; capsule prominently ribbed, rather short and 

 few-seeded; seeds beakless, very broad and blunt, usually abruptly 

 contracted above the base, areolate or low-papillate ; coma pale, fall- 

 ing easily: mostly slender annuals with terete stems, more or less 

 glandular-pubescent above, and rather firm veinless leaves. 



E. paniculatum Nutt. 1. c. 490. Stems rather slender, 1-4 feet high, 

 loosely dichotomously branched, mostly white glabrate below : leaves 

 1-2 inches long, chiefly alternate and fascicled in the axils, lanceolate or 

 linear-lanceolate, often folded along the midrib, acute, rather sparingly 

 denticulate, tapering to a slender winged petiole, gradually passing into 

 the smaller bracts above : flowers rather remote towards the ends of the 

 ascending branches, erect: the bracts often carried up on the peduncle; 



