Dr. T. Bell Salter on some forms o/Rubus. 367 



looser than in the ordinary forms of this plants not being, as it 

 usually is, a close tomentum, but a loose pubescence. The leaves 

 are not recurved as in the common form, but are coriaceous and 

 acuminate, rather abrupt, pale, but not white beneath. The 

 panicle is much broader than in the normal plant. Still however 

 the forms are osculant. 



6. Rubus discolor (W. and N.), var. argenteus. — Stem with scat- 

 tered patent hairs. PncA:/^^ weak, straight. Panicle branched, 

 pubescent. 



Hab. Bog at Burnt House, Isle of Wight. 



Syn, R. argenteus, W. and N. Rubi Germ. p. 45. tab. 19. 



This variety very nearly resembles the last. The stem is more 

 silky, the panicle weaker, the leaves narrower and less coriaceous. 



We now come to the consideration of several forms, including 

 Nos. 7 to 13, which are very nearly allied, but the arrangement 

 and naming of which have hitherto been very contradictory. They 

 have been generally known of late as constituting the " Rudis or 

 Radula group" which is characterized by a stem, hispid with nu- 

 merous short broad-based aciculi, and by pointed, and usually 

 jagged leaves. This group has by most been divided into as 

 many species as it contains forms, while on the other hand the 

 opinion has been hazarded that all might be united as forming 

 but one. 



The following analysis, after some considerable observation, is 

 offered with the belief that it will be found the correct grouping 

 of the forms, and prove available for reference. 



7. Rubus rudis {Wc^kQ). — /Sf^em arched, angled. Prickles strong, 

 decurved, equal, mostly confined to the angles of the stem. 

 Hairs jSetce and aciculi numerous, equal. Leaves quinate; leaflets 

 obovate, acuminate, doubly and coarsely serrated, green and 

 plain above, white beneath. Panicle large, branched and leafy, 

 hairy and very setose, with numerous long straight prickles. 

 Calyx lanceolate, prickly and setose, strongly reflected in fruit. 

 Flowers in July. 



Hab, Hedges and sunny places in the south. 



Syn. R. rudis, W. and N. p. 91. tab. 40. Bell Salter in 

 Phytol. ii. p. 137. R. Radula, Leighton, Fl. Shrop. p. 232. R. 

 Radula, 7. Hystrix, Bab, Man. p. 96. 



8. p, Leightonii. — Leaflets abrupt. Prickles of the panicle stout. 

 Hab, Almond Park, Shropshire, Mr, Leighton. 



■ Syn, R. Leightoni [Lees), Leight, Fl. Shrop. p. 233. 



