RYDBERG: Rocky MounNrTAIN FLORA 637 
prickles united 4%—¥ their length into a distinct wing, the alter- 
nate ones usually much smaller; back slightly keeled, without 
prickles, minutely hispidulous or glabrous. 
In habit this species also resembles Z. flortbunda, but is dis- 
tinguished by the narrow leaves and the united marginal prickles 
of the fruit. These characters would place it near ZL. scaberrima, 
which, however, has a different pubescence. 
SoutH Daxora: Oreville, 1902, Rydberg Sgr (type). 
CoLorabo: La Veta, 1896, Shear 3670. 
Oreocarya argentea sp. nov. 
Cespitose perennial ; stems 3—4 dm. high, hispid; basal leaves 
spatulate or oblanceolate, obtuse, 5-6 cm. long, densely white- or 
yellowish-pubescent, partly with stiff bristle-like hairs, partly with 
‘fine hairs, but all strictly appressed; stem-leaves oblanceolate, 
with the bristles more spreading ; inflorescence narrow and virgate ; 
calyx in fruit 8-10 mm. long, hispid ; its lobes linear-lance- 
_ olate ; corolla white, less than 5 mm. long; its tube included and 
limb ‘56 mm. wide; nutlets about 3.5 mm. long peers and 
with more or less distinct cross- ridges. 
This species is perhaps nearest related to O. sericea, which, 
however, is a much smaller plant and has mammillate-papillose 
nutlets without cross-ridges. It grows on dry hills in Colorado. 
Cotoravbo: Rifle, Garfield County, 1900, Osterhout 2122. 
v Oreocarya eulophus sp. nov. 
or less cespitose perennial; stem about 2 dm. high, 
hispid with yellowish hairs ; basal leaves numerous, spatulate, 4-5 
cm. long, finely cinereous and appressed hispid; stem-leaves 
oblanceolate, with the hispid hairs more spreading and often 
yellowish ; inflorescence a narrow and almost spikelike thyrsus ; 
calyx in fruit about 7 mm. long, yellowish hispid ; its lobes lance- 
olate ; corolla white, 10-12 mm. long; tube exserted from the 
calyx; limb about 5 mm. wide; nutlets 4-5 mm. long, with 
irregular honeycomb-like crests, 
This species is a near relative of O. fulvocanescens and O. 
cristata, but easily distinguished in fruit by its nutlets. It grows 
on gravelly hills at an altitude of 1800-2300 m. 
Cotorapo: Dolores, 1892, Crandall (type); McCoy’s, 1903, 
Osterhout 2750. 
Urau: Price, 1900, Stokes. 
