Nelson : New Plants from Wvoming 239 



mm. long, about equaling the slender style : ovules two in each 

 cell, usually only one maturing ; septum generally perforated by a 

 narrow slit. 



Probably most nearly allied to Z. alpina (Nutt.) S. Wats, 

 which seems to be a very rare plant, P^rom this its compact, 

 tufted, stemless habit separates it, as does also its smaller flowers 

 and short racemes and few-seeded pod. 



This is one of the first plants to come into blossom on the Lar- 

 amie Plains, its bright yellow showing on some of the naked, rocky 

 slopes of the foothills in mid April. It seems to occur in similar 

 situations throughout the southern part of the state. Collected a 

 number of times and, on the determination of others, distributed 

 as Draha glacialis Adams., a most unaccountable error. Some of 

 our collection numbers of it are 62, 1218, 3071, 4324 and 4797, 

 the latter number unusually large in every way. 



Cerastium Buffumae 



Perennial (?), stems densely clustered on the crown of a slender 

 root, closely leafy-matted and spreading, light or yellowish green ; 

 the numerous stems spreading or ascending, 7-15 cm. long, mi- 

 nutely glandular-pubescent, the internodes gradually longer up- 

 wards and less conspicuously leafy : leaves small, very numerous 

 below, oblong to elliptic, sessile or tapering to a broad, petiole-like 

 base, 5-12 mm. long : inflorescence strict and fascicled, the lower 

 pedicels elongated : pedicels and calyx closely glandular-puberu- 

 lent : sepals green, barely scarious margined at the tip, oblong, 

 obtusish, 4-5 mm. long : petals one half exceeding the sepals 

 (more or less), bifid : stamens ten : styles five : capsules when 

 mature about twice as long as the sepals : seeds brown when ma- 

 ture, closely but minutely papillate. 



In 1892 an extensive collection, mostly of grasses, was made 



by Professor B. C. Buffum for this University. Mrs. Buffum who 



accompanied the expedition collected most assiduously in other 



groups. Among the good things she secured was an abundant 



supply of this fine species from some locality in the Big Horn 



Mountains, the exact place not now known. It is with pleasure 



that I dedicate this species to its discoverer. Type specimen in 



w 



Herbarium University of Wyoming. 



Thermopsis annulocarpa 



Perennial from horizontal rootstocks, silvery pubescent through- 

 out with short, soft, appresscd hairs : stems single, or two (possibly 



