286 43. E. c^sius. 



R. tenuis Bell Salt. ! in A. N. H. xv. 305 (1845). Bab. ! 

 Syn. 11; Man. ed. 2. 98. 



R. ccesius /3 tenuis Bab. ! Man. ed. 6. 119. 



R. ccesius Leigh t. ! Shrop. Rubi, 26 (sp.). 



R. parvulus Gene v. ! in Mem. Soc. Acad. Angers, viii. 

 (1860). 



This plant differs from var. a in the follo^dng respects. 

 The prickles on the stem are many, small, stout, much de- 

 flexed, mostly equal, from considerably enlarged bases. A 

 very few aciculi and short setse are sometimes found, Dr 

 Bell Salter mentions quiuate leaves, but the only approach 

 to them which I have seen is found on a specimen sent by 

 Mr Bloxam, where one leaf has four leaflets of which the 

 fourth is very deeply lobed. The leaflets are rather doubly 

 than lobate-seiTate ; sometimes the underside has such an 

 abundance of hairs as to seem felted, but such is also the 

 case (although rarely) in var. a; the terminal leaflet is al- 

 ways, but sometimes only slightly, narrowed below, and 

 occasionally has a cordate base. The flowering shoot and 

 flowers do not seem to difier, but the fruit is said to want 

 the bloom usually found upon that of the other varieties. 



This has been supposed to be the var. agrestis of Weihe 

 and Nees, and rather strong states of it are often so-named; 

 but apparently their plant is only a slight variation of their 

 var. u7nbrosus, having stronger stems, more prickles, leaflets 

 which are rugose above and densely hairy beneath, and a 

 rather rounder terminal leaflet. 



Dr Bell Salter's var. ferox of his R. tenuis (A. IsT. H. xv. 

 305) agrees with the usual state of the plant in all respects, 

 except in having many exceedingly strong, short compressed, 

 deflexed prickles upon both its shoots. It has only been 

 found in one place, viz. near the farm at Apse Down, Isle of 

 Wight. It is the R. ccesius 8 ferox (Bell Salt. !) in the Rot. 

 Gaz. (ii. 130) and Fl. Vect. (160); but not the R. nemorosus 



