24 
ROSA SINOWILSONI Hemsl. 
Rosa Sinowilson i : caule elongato, sarmentoso ; aculeissparsis, falcatis, aequalibus ; 
foliolis 5-7, oblongis, acutis, magnis, simpliciter serratis, rigidis utrinque glabris ; 
rhachi glabra, parce aciculata ; stipulis adnatis, angustissimis, apicibus liberis, 
deltoideis, parvis ; floribus pluribus in paniculum corymbosum dispositis ; pedicellis 
elongatis, glabris ; calycis tubo subgloboso, nudo ; lobis lanceolatis vel ovato- 
lanceolatis, parce appendiculatis ; lobis linearibus, dorso glabris ; petalis albis, latis, 
sepalis duplo longioribus, dorso pubescentibus ; stylis coalitis, longe protrusis ; 
fructu subgloboso, nudo ; sepalis deciduis. 
R. Sinowilsoni Hemsley in Kew Bull. 1906, No. 5, p. 158. 
Stems sarmentose, 12-20 feet ; prickles scattered, falcate, uniform. Leaflets 5-7, 
oblong, acute, rounded at the base, 3-4 in. long, simply serrated, firm in texture, 
glabrous on both surfaces ; petioles glabrous, with a few small hooked prickles ; 
stipules adnate, very narrow, with small deltoid free tips. Flowers many, arranged 
in a very lax corymbose panicle ; pedicels glabrous, one or two inches long. Calyx- 
tube subgiobose, glabrous, in. long ; lobes ovate-lanceolatq, with a few linear erecto- 
patent appendages, naked beneath. Petals white, broad, twice as long as the sepals, 
pubescent on the outside. Styles united in a long column protruded beyond the 
disc. Fruit subgiobose, glabrous ; sepals deciduous. 
This very fine new species comes nearest to Rosa moschata Mill., 
from which it differs by its very lax panicle, long pedicels and compound 
sepals. It is also much larger in all its parts. It was found by Mr. 
E. H. Wilson, after whom it is named, on Mount Omi and the hills 
to the south in the province of Sze-chuan in the south-west of China, 
at an elevation of 2,000 to 4,000 feet above sea-level. 
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