236 MR. GEYER’S ROCKY MOUNTAIN PLANTS. 
brum, tubere oblongo, foliis gracillimis ternatim divisis, 
segmentis simplicibus vel trifidis lineari-angustissimis - 
acuminatis, petiolis folio longioribus basi longe membra- 
naceis, umbelle radiis inæqualibus, involucelli squamis 
setaceis, floribus capitatis albis, fructibus valde immaturis 
oblongis. 
Has. In wet swampy small prairies (high cold region), sur- - 
rounded by lofty mountains, Cœur d'Aleine country, 
growing with n. 305. May. (n. 302.) — About 8-10 inches 
high, remarkably slender, leafy from the base. The 
sheaths very long, peculiarly thin and membranous. The 
peduncles long and slender, exceeding the leaves in length; — 
the rays much elongated as the inflorescence advances. 
6. P. levigatum, Nutt.—Torr. et Gr. Am. 1. p. 627. 
Has. Wet spongy stony and somewhat shady places, slopes 
of Cœur d’Aleine Mountains, thousands growing densely - 
together; biennial. (n. 298.)— Flowers deep yellow. 
7. P. fœniculaceum, Nutt. — Torr. et Gr. Am. 1. p. 627: 
: Ferula foeniculacea, Nutt. Hook. 
. Haz. High fertile plains of Lower Platte and Kanzas Rivers, 
with Hymenopappus corymbosus. May. (n. 2437.) —var- p. 
Torr. et Gr. l. c. Clayey banks in the desert of UR 
Colorado, with Calochortus luteus. (n. 191 ) 
1. P. macrocarpum, Nutt.—Torr. et Gr. Am. 1. p. 628. 
Has. Clayey stony water-courses on the high plains of the 
Cœur d'Aleine, Spokan and Nez Percez. Quite prostrate. 
Flowers chalky white; root somewhat fusiform, throwing. 
. June. (n. 301.) _ | 
2c. a, Nutt.—Torr. et Gr. Am. Ae 
m; segmentis angustioribus. - i 
š Fertile slopes of the mountains, Nez pec near 
ow-line. Three to eight feet high. June. (n. 51 
L. multifida, Nutt.—Torr. et Gr. Am. 1. p. 630. 
Has. On Trappe rocks, — with Berberis Aquife liu 
; dong; flowers brow is 
