MR. GEYER'S ROCKY MOUNTAIN PLANTS. 229 
Percez, near Salmon River; rare. Four to six feet high. 
Racemes always erect (in these specimens,) long.and with 
numerous flowers. Berries brownish-red. (n. 507.) 
7. R. divaricatum, Dougl.—Lindl. Bot. Reg. t. 1359. Hook. 
Fl. Bor. Am. 1. p. 231. 
Has. Ravines and thickets, Kooskooskee valley. A robust 
shrub or small tree, 8-15 feet high, very thorny. Stems 
2-4 inches in diameter. Berries very large, glabrous, dull- 
red. (n. 393.) 
8. R. aureum, Ph.—Hook. Fl. Bor. Am. 1. p. 235. Lindl. 
Bot. Reg. t. 125. 
Has. Stony banks of Kooskookee River. Eight feet high. 
July ; in fruit. (n. 394.) 
PorTuLacezæ, Juss. 
l. Lewisia rediviva, Ph.—N utt. in Journ. Acad. Philad. 7. 
p. 32. t. 2. Hook. Fl. Bor. Am. 1. p. 228. Bot. Misc. 1. 
p. 344. t.70. Bot. of Beech. Voy. suppl. p. 334. t. 36. Torr. 
... et Gr. Am. 1. Suppl. p. 677. 
. Has. Stony volcanic plains and sandy woods, Upper Oregon, 
. abundant; and at Flathead and Spokan Rivers. The 
|... upper part of the thick branched tap-root is a receptacleof —— 
. Clusters of flowers; each cluster, before the flowers expand, __ 
. 438 surrounded by a circle of linear, canaliculated and some- _ 
_ What fleshy leaves, which remain five or six days, when — 
n. they wither and the flowers open, but only during sunny _ 
_ Weather. Soon the corolla withers also, the petals twist - 
_ Spirally and form a sort of calyptra over the fruit. After- 
_ Wards, the peduncle dries up with the persistent calyx - 
down to the joint, when the wind carries it off, and th 
seeds are thus dispersed over the plains. Six weeks 
is the period of vegetation of this remarkable plant, 
May to the middle of June. (n. 424) — 
laytonia lanceolata, Ph. Fl. Am. 1. p. 175. 
Fl. Bor. Am. 1. p. 224. Torr. et Gr. An 
po chonred. (n: 630) 
