196 Plants collected during a journey 



torily, and I was mistaken in supposing it to be one of the Po- 

 tentillae with pinnated leaves. I have now better specimens, in 

 which the stem is two-flowered. There can be little doubt 

 that the plant is Geum triflorum of Pursh. It is a species of 

 Sieversia, according to R. Brown, and much resembles the 

 S. Rossii, so beautifully figured in the botanical appendix to 

 Parry's first voyage. The Sieversia is considered as a sec- 

 tion of Potentillce, by De Candolle, from which it differs only 

 in its styles not being geniculate. 



124. Rubus Idjeus, var. americanus, ramulis glabriuscu- 

 lis ; caulibus petiolisque teretibus ; foliis omnibus ternatis ; 

 pedicellis aculeolatis. 



Hab. In rocky woods, near Council Bluff, on the Mis- 

 souri. Flowers in May. 



125. R. oeliciosus, caule fruticoso, ramosissimo, inermij 

 ramis petiolisque pubescentibus; foliis simplicibus, rotundato- 

 cordatis, breve 3-5-lobis, villoso-pubescentibus, rugosis; brac- 

 teis lanceolatis, unidentatis ; floribus subcorymbosis, termina- 

 libus ; laciniis calycinis ovato-oblongis, acuminatis, apice fo- 

 liaceis, petalis brevioribus. 



Desc. Shrub much branched ; branches flexuous, terete, pubescent. 

 Leaves suborbicular-cordate, 2-&J inches in diameter, villously pubescent, 

 rugous beneath, 3-5-lobed and serrate ; texture firm; petioles half an inch 

 in length, terete, pubescent ; stipules lanceolate, acuminate, shorter than 

 the petioles, with a single tooth near the base. Flowers 4-6 in a terminal 

 corymbose panicle, rather smaller than those of R. odoratus, purple. Pe- 

 dicels 6-8 lines long, not glandular. Calyx about two-thirds as long as the 

 corolla, pubescent ; sepals ovate-oblong, acuminate, somewhat foliaceous 

 at the extremity. Petals ovate, obtuse. 



Hab. On the Rocky Mountains. 



Obs. This species resembles R. odoratus, but is more 

 nearly allied to R. nutkanus. It differs from the latter, par- 

 ticularly in not being glutinous, and in the smooth calyx, 

 which is longer than the petals. Dr. James states, that the 

 fruit is large and delicious. 



