NEW WESTERN SPECIES. 167 



miuute, white, almost tubeless corolla, which is not gibbous at base, 

 and by its narrower pubescent achenes. It has been distributed as 

 V. Sitchensis, the difference between it and the Rocky INIountain 

 form of V. sylvatica being so evident that it has not been asso- 

 ciated with that. 



The tyj)es of this, as well as those of the following species, are 

 deposited in the Rocky Mountain Herbarium, at the University of 

 Wyoming. The following are the collections of this species: No. 

 793 (type). Wind River, Aug. 10, 1894, Aven Nelson; No. 4203, 

 Battle Lake, Aug. 17, 1897, Aven Nelson; Freezeout Hills, July 

 11, 1898, by the writer. 



Valeriana Wyomingensis. Stems weak and slender, several 

 from a creeping branched rootstock, 3-5 dm. high; glabrous except 

 for a little pubescence at the base of the petioles; radical leaves all 

 entire, with undulate margins, as also the terminal leaflet of the 

 cauline, 1-5 cm. long; the earlier rotund or obovate, with short, 

 broad petioles; cauline leaves 2 pairs, pinnate or the lower pair 

 rarely entire ; leaflets 1-3 pairs, small, oblong to lanceolate, the 

 uppermost pair not infrequently confluent with the much larger 

 terminal leaflet; inflorescence a cymose panicle, very loose and 

 open even at anthesis, few-flowered, composed of 7-15-flowered 

 cymules; corolla campauulate, white, 2-3 mm. long; tube proper 

 very short; throat hairy within; lobes recurved; stigma minutely 

 3-cleft; achenes lanceolate, glabrous, about 5 mm. long. 



Related to the preceding, but a more delicate plant. Its achenes 

 diff'er from those of V. micrantha in being glabrous, and from those 

 of V. sylvatica in being lanceolate, while the inflorescence is fewer 

 flowered than in the former, and much more open than in the 

 latter. 



The type is No. 5686, collected in moist woods, near Undine 

 Falls, in Yellowstone National Park, July 6, 1899. 



Phlox Whitedii. Low, suffrutescent; the yearly growths very 

 short, subtended by small scale-like ovate leaves (3-7 mm. long), 

 5-10 cm. long; the branches of the preceding season giving rise 

 terminally to short leafy-bracted corymbose (about) 9-flowered 

 cymes, or laterally to slender leafy branches, each of these termi- 

 nating in a fewer-flowered cyme; glandular-pubescent and viscid; 

 leaves of the sterile shoots linear, with slightly thickened and 



