Mr. Woops on the British Species of Rosa. 173 
ROSA 
CHARACTER GENERICUS. 
Receptaculum carnosum urceolare, fauce contracta. 
Calyx 5-phyllus paullum infra faucem receptaculi insidens. Fo- 
liola plus minus triangularia, tomentosa, æstivatione imbricata. 
Petala 5, obcordata, disco faucis receptaculi basi angustissimá 
affixa, venosa. 
Stamina plurima, disco receptaculi affixa. 
Germina numerosa, superficiei interne receptaculi affixa; inferiora 
pedicellata. Styli tot quot germina per faucem receptaculi 
transeuntes. Stigmata obtusa. 
Fructus: Receptaculum auctum baccatum, semina includens. 
Semina numerosa, angulosa. 
OBSERVATION. 
I have already explained the reasons which have determined me to consider the young 
fruit of the Rose as a receptacle. In the abortive attempts to produce flowers, which so 
frequently occur in Rosa sulphurea, this part is flat as in Potentilla. In R. turbinata and 
a Rose called R. caroliniana in the gardens about London, it is cup-shaped; and some- 
times even in our single English Roses a tendency to this form may be observed, but never 
without being accompanied by other circumstances of monstrosity. 
In addition to the above characters, it may be observed, that all British Roses have weak 
stems furnished with prickles; pinnate leaves with serrated leaflets ; and linear stipule ge- 
nerally furnished with glands on the edges, decurrent on the petiole of the leaf, 
Synopsis 
