MR. GEYER’S ROCKY MOUNTAIN PLANTS. 935 
2. P. ambiguum, Nutt.—Torr. et Gr. Am. 1. p. 626. 
Han. Sandy woods and pleins, Upper Columbia River: the 
* Biscuit root? of the Indians. April, May. (n. 458.) 
3. P. triternatum, Nutt.—Torr. et Gr. Am. 1. p. 626. Seseli 
triternatam, PA.—DOC.— Hook. Fl. Bor. Am. 1. * 204. t. 
94. Eulophus triternatus, Nutt. 
HAB. a. Grassy stony and loamy open slopes of the Cœur 
d'Aleine Mountains. (n. 314.)—G. leptocarpum, Torr. z 
Gr. 1. c.—P. leptocarpum; Nutt. (probably a good species.) 
Grassy prairies of the Nez Percez Indians, in large wet, 
Open, stony places. (n. 557.)—y. leptophyllum ; segmen- 
torum foliis angustioribus; erevices of Trappe masses, on 
the slopes ofthe high plains of Kooskooskee River: only one 
specimen found in flower. July. (n. 505.)—Of the variety, 
leptocarpum, as it is here called in deference to Messrs. 
Torrey and Gray, Mr. Geyer observes that the tuber 
is subglobose, from 1-4 inches in diameter, highly farina- 
 Céous, and the principal food of the Indians, who. Ong — — 
gather it in the flowering season. In the same prairies, 
| "odd Geyer remarks, the Gamass TORN | attain n ùnnsuil 
"Size of 3-34 inches in diameter. ——— E 
AP. (Ferula, Gey.) farinosum, Gey. mst. ; ; humile i ab 
 Blaucum tubere globoso farinaceo, foliis te 
S divisis, segmentis (uncialibus) linea 1 
, tenuatis, petiolis basi membranace 
‘squamis setaceis, floribus albis, fraoribus immáturis 5 exacte 
| Dune calycis "esee | 
