» 



112 ■ key to bkitish rubi. 



1. Green and hairy beneath, usually paler than above, but 

 apparently never felted :— (1 1) imbricatus. (20) gratm (glabrescent). 

 (21) leucandrus. (22) hirtifolius (very soft). (26) ramosus (Midlands). 

 (27) durescens (hard). (28) latifolius. 



2. As a rule only softly hairy and pale beneath, but occasionally 

 felted:— (17) carpinif alius. (18) rhombif alius. (19) villicaidis (very 

 rarely felted in English specimens). (23) Lindleianus. 



3. As a rule distinctly felted beneath, though sometimes losing 

 the felt late in the season, or under unfavourable conditions such 

 as shade or smoky atmosphere : — (14 c) LindebergU. (15) incurvatas. 



(16) ? montanus. (24) erythrinus. (25) argentatus. (26) ramows 



(Dev. & Cornw.). 



The following notes may give some further help in subdividing 

 this large group : — 



A, Somewhat resembling Group 1 (Suberecti). 

 a. In habit, and in the nearly racemose pan., with patent fruit- 



sep. : — carpinif 



b. In 



Dumnoniensis, nemoralis, car- 



pinifolius, rhombij vlius, gratus, leucandrus, and hirtifolius. 



c. In having occasional 7-nate 1. :—nemaralis (frequently), and 



(rarely) carpinif alius, villicaidis, and leucandrus. 



B. Approaching some of the later groups in having stalked glands. 



a. On bracts only : 



if< 



b. On pan.-rachis and ped. :—Dumnoniensis (very short), pidcher- 



rimus (in very variable quantity ; sometimes with acicuh 

 intermixed on pan. and st.), villicaidis (rarely), and ery- 

 thrinus (especially var. argenteus). 



11 . K. imbricatus Hort — St. arcuate-prostrate, remarkably 

 branched "with many slender whip-like shoots," angular, dull red, 

 nearly glabrous. Prickles short, stout, declining. L. and Its. convex. 

 L. 5-nate, narrow, rather thin and wrinkled, green and hairy on 

 both sides, opaque above, paler beneath. Lts. usually imbricate, 

 cuspidate or cuspidate- acuminate, with double acute serrations; 

 term, rotmdisk-obovate cordate; bas. exceptionally small. Pan. long, 

 leafy, usually rather narrow, with long distant remarkably ascending 



racemose branches, and upper 1. often grey- felted beneath. Sep. 



abruptly cuspidate. 



Near JR. affinis, but readily distinguished from it by the above 

 characters. Widely distributed in S.W. England, and occurring as 

 far east as Surrey. Roadside hedges and wood borders. 



UMNOXIEN 



St. arenmg, angular, nirrowea, uariv purpie \yu pnunu5s> a±n* F ^w^ 

 also), ivith many short crisp hairs, which extend in plenty to the 

 prickles. Prickles many, remarkably long and slender, with short 

 cofnpressed base, chiefly quite patent, yellowish-tipped. L. 5-nate. Lts. 



flat, dark green and hairy above, white- or grey-felted beneath, 

 somewhat irregularly or doubly serrate; term, subrotund, with 

 cuspidate or cuspidate-acuminate point, subcordate. Pan. narrow 



