Nelson : New Plants from Wyoming 



481 



the lateral linear : spikes dense, slender, half the whole length of 

 the plant, yellowish : calyx lobes equal, linear-lanceolate, acumi- 

 nate, a little shorter than the ovoid tube: corolla 12-15 "^^- ^ong, 

 y^ longer than the calyx and slightly exceeding the bracts': lip 

 triply saccate, and conspicuously 3-toothed, the sacs shallow : 

 galea broadish, obtuse or subacute, sometimes with a small tooth 

 near the apex, slightly longer than the teeth of the lip. 



This plant has been distributed as OrtJiocarpits pallcscois Gray, 



intermingled possibly with some authentic specimens of that species. 



Both were collected in the same locality and unfortunately were 



not discriminated and so were distributed ticketed as below. Though 



perhaps as nearly related to that species as to any other, yet the 



proposed species is very distinct. Its fascicled branches with their 



long slender spikes give it a characteristic habit; its equally lobed 



(4) calyx and its 3 -toothed lip which nearly equals its short and 



broad galea w^ill aid in distinguishing it. The only collection of 



it at hand is no. 900, Gros Ventre river, Aug. 15, 1894, in part. 



Oonopsis argillacea 



i 



Tufted, caespitose, the short branches of the multicipital 

 caudex barely reaching the surface of the soil, the crowns more or 

 less covered with the bases of dead leaves : stems numerous, 3-8 

 cm. long, simple as to the base, terminating in a leafy corymbose 

 inflorescence of few heads, permanently sparsely lanatc-pubescent 

 as are also the leaves : leaves entire, narrowly to broadly linear, 

 pungently acute, tapering at the base (those on the crown some- 

 w^hat petiolate), 4-8 cm. long, many at length overtopping the 



headf 



s 



involucre tomcntose, about i cm. high, its bracts oblong- 



ov^ate, acuminate, not conspicuously green-tipped : rays showy, 

 about 10, the disk flowers twice as many : style appendages lanceo- 

 late, as long or longer than the stigmatic portion : pappus moder- 

 ately abundant, but little shorter than the corolla tube, slightly 

 fulvous : akene softly pubescent, oblong, 3-4 mm. long. 



Allied to 0. multicaidis (Nutt.) Greene, but distinguished by its 



less ligneous base, much longer leaves which overtop the stems, 



r 



more numerous heads and rays, longer and more abundant pap- 

 pus and different style appendages. This occurs on naked clay 

 slopes and flats, a habitat quite in contrast with that of 0, vnil- 

 ticaulis. 



Secured by Mr. E. Nelson in Bate*s Hole, Carbon Co., July 

 13, 1898, no. 4867; also on Wallace Creek, near Garfield Peak, 



I 



July 30, 1898, no. 5009. • 



