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Nelson : New Plants from Wyoming 243 



Lappula cenchrusoides 



r 



Annual, rather intricately bushy -branched, 2-4 cm. high : 

 stems and branches rather slender : pubesence moderately harsh, 

 rather minute, that of the stems of short, appressed, whitish hairs 

 with inconspicuous pustulate bases,— of the leaves somewhat similar, 

 scanty on the upper face, denser below with inordinately large 

 pustulate bases : leaves numerous, small, oblong to ovate, 1-2 

 cm. long : flowers in leafy-bracted spikes, very minute : the 

 lobes of the corolla obtuse, suborbicular, slightly shorter than the 

 tube which about equals the calyx : nutlets large, ovate-acute, 

 nearly sessile, not deflcxed, minutely papillose-tuberculate on the 

 back, the larger of the tubercles in a median row, armed on the 

 margins with a double row of bristles ; bristles glochidiate -barbed 

 at the apex only, somewhat unequal, mostly distinct to the base. 



This was found in considerable abundance in a dry canon, 

 among the rocks, mostly in clumps. The very abundant sandbur- 

 like fruits at once attracted attention and closer examination shows 

 many points of difference between this and L. Tcxana (Scheele) 



I 



Britt. which is so abundant in this range. 



Type specimen in Herb. University of Wyoming, no. 5339, 

 Laramie Hills, September 14, 1898. 



Mertensia foliosa 



Rootstock vertical, short, thick, covered with dead brown 

 bark, usually branched at summit, the i-several crowns clothed 

 with the bases of dead petioles : roots slender, fibrous, intermingled 

 with a few large woody ones : stems i or more from each crown, 

 simple, ascending or erect, striate, glabrous or minutely pruinose, 

 -3 dm. high, leaves thick, ample, glabrous, minutely scabrous on 

 the margins : radical leaves numerous, elliptic to oblong, 4-7 cm. 

 long, slender petioles once or twice as long : cauline crowded, 

 sessile, oblanceolate or (upwardly) lanceolate and acute : the foliar 

 bracts lanceolate : panicle rather crowded, the lower peduncles but 

 little elongated : corolla rather large, about i 5 mm, long, the tube 

 slightly exceeding the limb, about twice the length of the lanceo- 

 late sepals ; the crests in the throat between the bases of the fila- 

 ments conspicuous, a lo-toothcd ring at the base of the tube, 

 glabrous throughout : filaments as broad or broader than the 

 anthers : anthers (in all specimens examined) exserted /. c, outside 



of the tube. 



Recently distributed 



ifolia 



it is far from being. It is the prevailing species in southwest 



