Tas. 6857. 
ROSA pisocarpa. 
Native of British Columbia and Oregon. 
Nat. Ord. Rosacex.—Tribe RosEx. 
Genus Rosa, Linn. ; (Benth. et Hook. f. Gen. Pl. vol. i. p. 625.) 
Rosa pisocarpa; gracilis, fere glaber, inermis v. aculeis stipularibus paucis parvis 
rectis v. ascendentibus, foliolis parvis ellipticis obtusis serratis, floribus parvis 
solitariis corymbisve paucifloris, bracteis paucis Jinearibus, calycis tubo urceo- 
lato glabro, lobis e basi late ovata longe et anguste productis extus nudis 
glandulosisve intus pubescentibus apicibus dilatatis, fructu globoso pisi mole 
vertice infra lobos persistentes erectos constricto, stigmatibus liberis, acheniis 
dimidiato-oblongis dorso apiceque hirsutis. 
R. pisocarpa, A. Gray in Proc. Amer. Acad. vol. viii. p. 382, and in Bot. Calif. 
vol. i. p. 187; 8S. Wats. Bibl. Ind. N. Amer. Bot. p. 313, and in Proe. 
Amer. Acad, Art. and Se. vol, xx. p. 342. 
R. nutkanaP var. microcarpa, Crepin in Bull Soc. Bot. Belg. vol. xiv. p, 44, 
To discuss the affinities of any rose, British or Exotic, is 
no light matter even for a specialist in the genus, and I 
hesitate to offer any opinion upon this little species, which 
in habit resembles no other known to me. At first sight 
it seems as different as roses are “‘ inter se”’ from R. cali- 
jornica, which is a much larger, coarser, many-flowered 
species with recurved prickles; but 8. Watson, in his 
revision of the North American Roses, regards it as “ rather 
doubtfully distinct from that plant, distinguished by the 
somewhat smaller and more globose fruit, and by the 
prickles never recurved, but frequently ascending.” 
R. pisocarpa was first described as a native of Oregon, 
and a specimen so named by Crepin was gathered by 
Douglas on the Columbia River in 1826, but as this is of a 
larger and coarser plant with ovoid fruit, I should refer it 
to R. californica. Dr. Gray and I gathered it in the 
Upper Sacramento Valley, California, at an elevation of 
4000 to 6000 feet in 1877, and it is probably not an 
uncommon plant in North California. Guay describes the 
calyx-lobes as reflexed, and the fruiting peduncle as 
nodding, which is not the case in dried specimens, nor in 
those that flowered at Kew. In the “ Botany of Cali- 
wan. Ist, 1886, 
