Roha.] ROSACEA. 131 



R. involu'ta proper (var. Smith'ii, Baker) ; dwarf, mature leaflets glabrous 

 above hairy and eglandular beneath, serratures close sharp ; flowers soli- 

 tary, calyx-tube densely acicular, sepals simple. — Var. R. Sabi'ni, Woods ; 

 prickles ^ in. straight, leaflets with copious compound serratures thinly 

 pubescent above, petioles and peduncles densely hairy glandular and bristly, 

 calyx-tube subglobose more or less setose, sepals pinuate, fruit subglobose. 

 R. gra'cilis, Woods ; R. niva'lis, Don ; R. corona'ta, Crep. The most common 

 form. — Var. R. Donia'na, Woods ; small, leaflets more densely hairy, flowers 

 solitary, sepals hardly pinnate, calyx-tube and fruit densely prickly. Dry 

 places. Approaches R. mollis'sima. — Var. graciles'cens, Baker ; robust, 

 leaflets thinly hairy on both surfaces eglandular beneath much toothed, 

 terminal 1-1| in., flowers 3-6, calyx-tube glabrous ellipsoid. Antrim. — 

 Var. Robertso'ni, Baker ; sepals of Sabi'ni, but teeth of leaflets sharper and 

 less compound, upper surface glabrous when mature, calyx-tube sometimes 

 naked. Newcastle, Yorkshire, Antrim. — Var. Nicholso'ni, Crep. ; densely 

 setose, leaflets broadly ovate glabrous above, glandular beneath with hairy 

 nerves, teeth very compound glandular. — Var. Iceviga'ta, Baker ; leaflets of 

 Sabi'ni, petiole villous and glandular rarely^ristly, peduncle and calyx-tube 

 glabrous, sepals simple eglandular, fruit depressed globose. Yorkshire, 

 Antrim, and Derry. — Var. Moor'ei, Baker ; prickles very stout | in., leaflets 

 densely glandular beneath, petiole peduncle and calyx-tube densely setose 

 and glandular, the larger prickles curved, sepals slightly pinnate. Derry. 

 Approaches R. rubiyino'sa. — Var. occidenta'lis, Baker; near Wilso'ni, but 

 leaflets smaller and petioles and peduncles glandular and bristly, calyx-tube 

 globose. Ireland, locality unknown. — Var. R. Wilso'ni, Borrer; tinged with 

 purple, prickles as in Sabi'ni, leaflets often cordate terminal large glabrous 

 ;ibove, ribs thinly hairy and subeglandular beneath, serratures simple, calyx- 

 tube almost glabrous, sepals nearly simple, fruit subovoid. Menai Straits, 

 Derry. Approaches R. rubel'la. 



4. R. rubigino'sa, L. ; hush small, branches erect or arching, prickles 



stout at the base scattered hooked with often glandular hairs and bristles 



intermixed, leaflets densely glandular aromatic glabrous or thinly hairy, 



flowers 1-3, sepals subpersistent, fruit globose ovoid or oblong. 



Best distinguished by its suberect habit and copious glandular pubescence, 



which gives out the strong sweetbriar odour ; this, however, becomes fainter 



in the forms that pass into R. canina and R. villosa. — Europe, N. and W. 



Asia to N.W. India ; introd. in N. America. 



R. rubigino'sa proper ; very sweet-scented, erect, branches compact, prickles 



with a few bristles and glandular hairs intermixed, peduncles densely 



bristly, leaflets glabrous above, pubescent beneath, sepals densely glandular 



pinnate, fruit globose. R, Eglante'ria, Woods. Chalk hills, S. of England, 



native ? ; probably not indigenous in Scotland and Ireland ; Channel Islands. 



Sweetbriar. — Var. R. permix'ta, Deseg. ; leaves and styles glabrous, sepals 



deciduous, fruit ovoid. Box-hill. Approaches micran'iha. — R. sylxic'ola, 



Deseg. and Rip., is less scented, prickles more slender, leaflets hairy and 



less glandular beneath, styles hairy, fruit ovoid. N. Yorkshire. 



Sub-sp. R. micran'tha, Sin. ; branches long arched, prickles equal, scent faint, 



leaflets small more pointed glabrous above densely glandular beneath, 



flower 1 in. diam., sepals deciduous densely glandular with a leafy point 



and 1-2 leaflets, styles glabrous, fruit urceolate scarlet, disk evident. 



K 2 



