73— ROSA PISOCARPA A. Gray 
Rosa pisocarpa: caule erecto, aculeis parvis, rectis, saepe geminis infrastipu- 
laribus ; foliolis 5-7, parvis, oblongis, simpliciter serratis, facie glabris, dorso leviter 
pubescentibus ; rhachi pubescente, haud glandulosa ; stipulis adnatis, baud glandu- 
loso-ciliatis, apice libero parvo ; floribus paucis, corymbosis ; pedunculis nudis ; 
calycis tubo globoso, nudo ; lobis lanceolatis, simplicibus, apice foliaceis, dorso 
glandulosis ; petalis parvis, rubellis ; stylis liberis, villosis, haud protrusis ; fructu 
parvo, globoso, rubro, pulposo, sepalis erectis persistentibus coronato. 
R. pisocarpa A. Gray in Proc. Anier. Acad. vol. viii. p. 382 (1873). — S. Watson 
in Brewer & Watson, Bot. Calif, vol. i. p. 187 (1876). — Hooker f in Bot. Mag . 
vol. cxii. t. 6857 (1886). — Koehne, Deutsche Dendrol . p. 295 (1893). — Rehder in 
Bailey, Cycl. Am. Hort. vol. iv. p. 1554 (1902).— C. K. Schneider, III. Handbuch 
Laubholzk. vol. i. p. 578 (1906).— Piper in Contrib. U. S. Nat. Herb. vol. xi. p. 33s 
(FI. State of JVashington) (1906). 
Stem erect, reaching a height of 5-6 feet ; branches bright red-brown in exposure. 
Prickles small, slender, nearly straight, often in pairs at the base of the leaves. 
Leaflets 5-7, small, oblong, simply serrated, glabrous above, thinly pubescent 
beneath ; petioles pubescent, not glandular ; stipules adnate, not gland-ciliated, with 
small, ovate, free tips. Flowers often 3-4, in a corymb; pedicels naked ; bracts ovate- 
lanceolate. Calyx-tube globose, naked ; lobes lanceolate, simple, leaf-pointed, f in. 
long, glandular on the back. Petals small, bright pink. Styles free, villous, not 
protruded. Fruit red, pulpy, globose, J in. diameter, ripening early in September, 
crowned by the erect persistent sepals. 
. ^ osa pisocarpa is scarcely more than a mountain variety of Rosa 
californica Cham. & Schlecht., from which it differs only in the small 
size of its parts. Its characters, however, have kept constant after 
many years’ cultivation. It was first found in Oregon by Mr. Elihu 
Hall in 1871. Sir J. D. Hooker and Dr. Asa Gray found it in the 
upper valley of the Sacramento, at an elevation of 4,000-6,000 feet 
above sea-level. A plant was sent to the Royal Gardens, Kew, from 
the Arnold Arboretum by Professor C. S. Sargent. 
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