Dr. T. Bell Salter on some forms of Rubus. 367 
looser than in the ordinary forms of this plant, 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. Prickles 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 /eaves 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 poimted, 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 (Weihe).—Stem arched, angled. Prickles strong, 
decurved, equal, mostly confined to the angles of the stem. 
Hairs, sete 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 retlected 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. 11. p.137. RK. Radula, Leighton, Fl. Shrop. p. 282. R. 
Radula, y. Hystrix, Bab. Man. p. 96. 
8. B. Leightonii.—Leaflets abrupt. Prickles of the panicle stout. 
Hab. Almond Park, Shropshire, Mr. Leighton. 
Syn. R. Leightoni (Lees), Leight. Fl. Shrop. p. 233. 
