New Plants from Wyoming, XIV 
By AVEN NELSON 
’ Eriophorum ocreatum 
Culms growing singly, from the corm-like crowns of the short 
slender rhizomes, the base sheathed in old leaf bases, subterete, 
finely striate, smooth, slender, 2-3 dm. high: sheaths 2-3, 2-3 dm. 
long, all blade-bearing ; blades folded-channelled, obscurely rough- 
ened on the margins, broadly linear, rather rigid, short, 5-10 cm. 
long, tapering to a triangular point, leaves of the involucre 2-4, the 
longer usually erect and surpassing the inflorescence: spikelets 
3-6, subumbellate, the longer-peduncled drooping: scales oval 
or ovate, obtuse or scarious-lacerate, brown, not obviously veined : 
bristles numerous, glistening-white, 4-6 times as long as the 
scales: akene broadly obovate, obtuse, dark brown (nearly black). 
This species is most nearly allied to E. polystachyon L., but 1s 
readily distinguished from it by its more slender habit, shorter and 
fewer leaves, generally fewer and larger heads, longer and more 
glistening-white bristles, very different scales and akene. In its 
few, long-vaginate, short leaves, and in its akene it reminds one of 
E. vaginatum L. In its slender culm which often greatly sur 
passes the uppermost leaf it suggests Z. gracile Koch. It is prob- 
ably a rare plant as thus far I have seen but two collections of it. 
The type was secured in an open, grassy, subalpine park in the 
Medicine Bow Mountains, Lincoln Gulch, August 8, 1900, 
8014. 
. Hemicarpha aristulata (Coville) 
Hemicarpha micrantha aristulata Coville, Bull. Torrey Club, 
21: 36. 1894. 
Annual, glabrous, culms few to several, erect, 8-15 ™- high, 
filiform or capillary, exceeding the capillary leaves: involuc 
leaves 2-3, unequal, 5—20 mm. long: spikes 2 ( sometimes but vy 
ovoid, 3-5 mm. long : scales rhombic, acuminate, the body nea? y 
I mm. long, scarious-margined, some of the margins turning 
brown, with a green midrib and inconspicuous nerves ; the eee" 
mination green, subulate, somewhat spreading, nearly as long a5 
the body of the scale or in the lower ones exceeding : sepal lar 
as long as the ovule, obtuse or even with a truncate oF toole 
apex: filament barely exceeding the ovule: style short, 
400 
