306 Dr. Bell Salter on three new species of Rubus. 



closely observed it for many years, I am satisfied of its distinct- 

 ness, and have no doubt that the characters now given will be 

 found sufficient for it to be readily known. I have already found 

 it in Dorsetshire, Wiltshire and Hampshire, including the Isle 

 of Wight. 



Var. /3. is a somewhat stouter plant, and very much more 

 prickly. It appears to be far less common, being hitherto only 

 observed in the Isle of Wight, at Apes Down near the Farm. 



2. Rubus Borreri. Caule procumbente, tereti, aculeato, pilis paten- 

 tibus hirto ; aculeis crebris, longis, tenuibus uncinatis ; foliolis 

 quinatis, obovato-cuneatis, supra subglabris, subtus hirtis conco- 

 loribus ; panicula corymbosa, ramis inferioribus longis, decompo- 

 sitis, superioribus brevioribus, llore terminali subsessili ; aculeis 

 paniculse paucis, pedunculis pubescenti-hirtis ; bracteis lanceolatis, 

 hirtis, inferioribus ternatis aut dentatis, superioribus simplicibus ; 

 calycibus ovato-lanceolatis, longe acuminatis, pubescenti-hirtis, 

 fructum laxe amplectentibus ; fructu nigro, hemisphserico, parvis 

 nitidis drupeolis composito. 



Hab. in Insula Vecte. 



This species is one most readily distinguished from any other. 

 It is a creeping plant of considerable length. Its nearest affinities 

 are with the R. villicaulis and R. syhaticus of Weihe and Nees, 

 two forms very rightly considered as mere varieties of the same 

 species by Mr. Babington * : the nature of the hairiness of the 

 stem and the form of the thorns, together with a principal cha- 

 racter of the leaves, which are hairy, yet deep green beneath, as- 

 sociate it very nearly with those forms ; the stem however is both 

 more thorny and more hairy, and the leaves more slender. The 

 characters by which it is distinguished from all to which it is al- 

 lied are to be found in the parts of inflorescence and fructification. 

 The arrangement of the corymbose panicle as described above 

 gives the plant a very remarkable appearance, and at first sight 

 separates it widely from R. villicaulis and its varieties, the pani- 

 cles of which are slender and tapering. The fruit and calyx pre- 

 sent still better discriminating characters. The hemispherical 

 form of the fruit and the clasping calyx distinguish it entirely 

 from all the other species allied to it. 



The fruit is of a remarkably bright jetty appearance when ripe, 

 but prior to that it has a peculiar opake flesh tint ; this last cha- 

 racter was pointed out to me by my friend Mr. Borrer, who was 

 with me on the third occasion of my observing this plant. In 

 acknowledgement of his successful labours in this genus, and of 

 his assistance in discriminating the present species, I have adopted 

 for it his name. 



* Manual of British Botany, j). 95. 



