352 Nelson : New Plants from Wyoming 



and C. asperiuius^ species of this range, is quite distinct from them, 

 by its bushy branched habit, its greener aspect, its profusion of 

 flowers and fruit, the sub-teretish pod wliich is curved-ascending 

 and with a distinct style. As is well known, C. aspcr has a simple 

 stem, the pods are straight and strongly divaricate : In C. aspcrinius 

 the pubescence is harsh and cinereous and the pods strikingly 



^^ flatly 4-sidcd/' 



This species has not been secured except in the desert region 

 of south-central Wyoming. Here it is greatly abundant and, as 

 observed throughout a large area there, it maintains its habits and 



' characters as before given. In the eastern part of the state and 

 again In the western, in soils vei*}* different from those of the desert, 

 C. aspcr is the prevailing form. 



Type specimen in Herbarium University of Wyoming, no. 



4731, Green River, June 13, 1S9S. 



r/ 



Draba andina 



.9? andina Nutt. T. & G. Fl. N. A. I : 



104 



That this very rare plant has again been secured there can be 

 little doubt. Again it is only in fruit, but the fruit characters 

 are sufficiently distinctive so that no violence is done in estabhsh- 

 ing it as a species on habit, leaf and fruit characters only. Then, 

 too, it appears that it should not be associated with D, oligospcrma, 

 ■ It has the same habit, but the branches of the caudcx arc shorter, 

 loaves shorter and more closely imbricated and the fruiting raceme 

 (scape) shorter. The pods are oval to orbicular, about 3 mm. !ong 

 and the cells mostly 2-seeded : style about half as long as the 

 pod ; stigma disk-shaped. 



as 



toward tlK; source of the Platte.'* These specimens were collected 

 in the Frcczeout Hills, in the drainage basin of the upper Platte^ 

 on naked clay ridges, a very different habitat from that of D. 

 oligospcrma. Type no. 4487, collected by Mr. Elias Nelson, 



Arenaria verna equicaulis 



Perennial from a very slender woody root ; intricately branched 

 at the base, finely viscid pubescent throughout : stems filiform, 

 very numerous, erect from a decumbent base, nearly uniform in 



