RYDBERG: NOTES ON ROSACEAE 77 
sides, coarsely crenate-serrate with broad teeth; flowers corymbose; 
hypanthium round-ellipsoid or globose, with a short neck; sepals 
ovate, caudate-acuminate, about 8 mm. long, villous within and 
on the margins; petals 8-10 mm. long. 
This species is related to R. pisocarpa and R. ultramontana, 
but differs in the shorter and broader thicker leaflets, the more 
prominent armature, and the small flowers. 
NEVADA: mountains west of F ranktown, 1912, Heller 10520 
(type, in the herbarium of the New York Botanical Garden). 
19. Rosa pisocarPpa A. Gray, Proc. Am. Acad. 8: 382. 1872 
Professor Crépin badly misunderstood this species. Nearly 
anything with a small hypanthium he referred to it. Specimens 
of R. Woodsit, R. Fendleri, R. ultramontana, together with two 
undescribed species, and even R. Engelmanni we find determined 
as R. pisocarpa by him. It belongs purely to the Columbia 
Valley region and is not found in the Rocky Mountain states. It 
is characterized by the elliptic or oval leaflets, finely puberulent 
beneath, the comparatively short and glandular sepals, the 
numerous flowers and short ascending straight prickles. 
The only specimen from California seen by the writer is one 
collected by Mrs. Austin without definite locality. 
20. Rosa salictorum Rydberg, sp. nov. 
Stem slender, 3-5 m. high or in open places lower, unarmed or 
nearly so, except the new shoots, which are bristly at the base; infra- 
stipular spinesseldom present; leaves five- toseven-foliolate; stipules 
adnate to the petioles, 1.5~2 cm. long, the upper dilated, more or 
less toothed, finely puberulent; petioles and rachis unarmed, puber- 
ulent; leaflets broadly oval, coarsely and evenly serrate, thin, 
equally green on both sides, glabrous above, finely puberulent 
beneath, rounded or acute at both ends, 2-4 cm. long; flowers 
corymbose, conspicuously leaf-bracted; pedicels glabrous: hypan- 
thium glabrous, globose, contracted above, in fruit about 1 cm 
broad; sepals lanceolate, caudate-acuminate, about 15 mm. long, 
blabrota on the back, tomentose within and on the margins, erect 
and persistent in fruit; petals pink, about 15 mm. long; styles 
distinct, persistent, not “exserted. 
