Mr. Woops on the British Species of Rosa. 217 
also differs in having the leaves pubescent on both surfaces: to 
this may be added, that the aculei are more slender and less 
curved than is usualin this tribe, though quite enough so to show 
that they belong to it; and they are also more numerous, and tlie 
petioles are very rarely unarmed. ‘The entire pinne of the calyx 
seem to be constant in this Rose, a circumstance seldom to be 
met with in those which resemble it most nearly. Its closest affi- 
nity is certainly with R. collina; but a careful attention to the 
above marks will be sufficient to distinguish it. _ 
20. Rosa DUMETORUM. dee 
R. stylis distinctis, receptaculis ellipticis bracteas superantibus, 
aculeis uncinatis, foliolis simpliciter serratis utrinque hirsu- 
tis. 
R. dumetorum.  Thuilliers Fl. des Env. de Paris, 250. 
R. canina £. Desvaur J. de Bot. ii. 115. 
Frutex 4—96- pedalis. Rami debiles, diffusi, olivacei, aculeati; aculei parviusculi, unei- 
nati, subbinato-stipulares sparsique. Petioli pilis aculeisque uncinatis, interdum 
- etiam glandulis instructi. Stipulæ lineares, apicem versus glanduloso-serratæ, mar- 
-gine pilose, ez floribus propiores ceteris paullàm latiores, denique foliis deficientibus 
in bracteas lanceolatas parvas, latitudine parüm, longitudine nequaquam, stipulas 
superantes, immutatæ. Foliola 5 vel 7, sublucentia, par superius et foliolum impar 
ceteris majora, impar quoque etiam foliolis paris superioris semper latius, nunc ellip- 
tica acuta, nunc subrotunda acuminata, simpliciter serrata, subtus nervo-pilosa vel 
, juniora sericeo-pilosa, pagina utráque hirta. Pedunculi 1—3, glabri, pilisve sparsis 
.. tantum instructi, bracteas plerumque subæquantes, interdum superantes, Receptaculum 
me ellipticum. vel ovatum, nunc fuscum, nunc floribus decidentibus olivaceum, glabrum. 
© Calycis foliola triangulari-elliptica, acuminata, } I plen 'rumq e glabra, rarius pilosa, com- 
posita ; pinnis confertis lanceolatis hic illic incisis, , margine ssepius integerrimis. Flores 
planiusculi, petalis rubescentibus. Styli subinclusi, stigmatibus in globulum villo- 
sum congestis, Fructus late ovatus vel | subglobosus, glaber, ruber. 
Hedges in the southern counties occasionally ; clones in any 
abundance. 57159 
VOL. XII. 2 
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