264 Nelson : New Plants from Wyoming 



fibrous rootlets : pubescence fine ; that of the stem (especially be- 

 low) of short, recurved hairs, becoming closer and more spread- 

 ing above on the leaves and inflorescence : leaves trifoliate ; the 

 leaflets again 3 -parted or variously lobed, the segments 1—3 cm. 

 long, from narrowly oblong in the lower leaves to linear in the 

 uppermost ; the lower early deciduous, the uppermost sessile and 

 greatly reduced : petioles erect or approximated to the stem, some- 

 what dilated at the base, the lower longer than the leaflets, gradu- 

 ally shorter upwards : inflorescence a dense spike, rarely much 

 exceeding 1 dm. in length ; the pedicels short, erect and rather 

 stout : flowers from a deep to a dingy blue ; the spur straight with 

 merely a flexed tip, exceeding the petals and pedicels in length, 

 standing nearly at right angles to the rachis ; the lateral petals 

 deeply cleft, about 1 cm. long, very sparsely long hairy: follicles 

 3, pubescent, ovate, acuminated into the short style, not divaricate, 

 when mature 6—8 mm. long : seeds numerous, irregular, the coats 

 smooth and sharply wing-angled. 



That this is allied to the little known D. simplex Dougl. there 

 can be little doubt but its smaller size, different pubescence, broader 

 and shorter leaf segments, short (not acuminate) spike, the re- 

 latively shorter spur which is not subulate-pointed and probably 

 different habitat will serve to distinguish it. 



It occurs in abundance in a few of the meadows of the upper 

 Jackson's Hole country, preferring wet, almost boggy places where 

 grasses and sedges abound. 



Type specimens from Snake River, August 1 3, 1899, no - 6442. 



Draba saximontana 



Caudex caespitose, profusely slender branched, branches more 

 or less clothed with the imbricated dead leaves : leaves linear, 5-10 

 mm. long, imbricate on the crowns, sparsely stellate-pubescent on 

 both sides, obscurely ciliolate, midrib evident : first flowers nearly 

 sessile, raceme lengthening and becoming open, fruiting raceme 

 (scape) 2>~7 cm - l° n g> glabrous : petals yellow, broadly spatulate, 

 truncate or retuse, nearly twice as long as the elliptic, glabrate 

 sepals : pods narrowly ovate, base rounded, apex sub-acute, glab- 

 rate or sparsely pubescent with short, simple hairs, 4-5 mm. long, 



6-8 



s 



pedicels : stigma not expanded: ovules few, 2-3 in each cell, only 



one or two maturing. 



Probably specimens of this exist in the herbaria as D. glacialis 

 Adams, but from that species its few-seeded pod and nearly glab- 



