172 ON THE DUMETORUM GROUP OF RUBI IN BRITAIN. 



tlie name ' intermedius^ from the doubt whether the name inhercu- 

 latus would not also be extended to concinnus, which I hold of suf- 

 cient varietal distinctness. It is fairly common, though rather 

 off the type, all round London, e. g. in the Kilburn hedges, Middle- 

 sex. Most typical from Sheen Common, Surrey, where Mr, Baker 

 observed it first, this being the Eichraond plant quoted by Prof. 

 Babiiigton fur tuberculains in ' British Rubi,' p. 283. Mr. Bloxara 

 sends an excellent and characteristic specimen from Atherstone, War- 

 wickshire, though he tells me that conc'mnus only occurs just round 

 Twycross, Leicestershire. Both at Kew and in Mr. Bloxam's set there 

 are excellent specimens sent by Lees as " R. dumetorum, W. and N., 

 var. glabratus,^^ and gathered near Worcester. In Cheshire I have 

 never seen it yet. It is noteworthy how near to what used to be 

 called R. Wahlhergll, Bell Salt., and I suppose now would be named 

 R. althcEifoUus, Host., this plant at times comes. 



R. dumetorum, y. pilosus, W. and N. ; stem arcuate-prostrate, 

 bluntly angular; prickles subpatent, long, rather slender, from com- 

 pressed bases, numerous, scattered, passing gradually into many and con- 

 spicuous setae and aciculi, and the whole stem clothed with pubescence ; 

 leaves quinate or ternate ; terminal leaflets broadly obovate-acuminate 

 or almost orbicular-cuspidate, subcordate ; intermediate leaflets ob- 

 ovate-lanceolate, acuminate, rather unequal-sided, rather imbricate ; 

 basal leaflets ovate, imbricate, subsessile ; all finely and hardly doubly 

 deltoid-serrate-dentate (but in shade specimens notably so), thick, 

 coriaceous, clothed beneath with very dense green felt ; stipules 

 lanceolate, glandular-hairy ; petioles rather long in proportion to 

 the leaf; flowering-shoot stout, stifl", and nearly straight, faintly an- 

 gular, armed much as dwersifolins, but much hairier, with long 

 unequal subpatent or declining prickles, and very numerous setse, 

 aciculi, and hairs ; leaves ternate ; terminal leaflet obovate-acumi- 

 nate, often rather oblong-obovate ; basal leaflets unequal, ovate, exter- 

 nally lobed, all evenly or doubly serrate-dentate, green, felted be- 

 neath, thick, coriaceous ; panicle nearly to the top leafy ; axillary 

 branches longer and more distant than diversifoUns, very corymbose 

 in their growth, many-flowered ; sepals ovate-cuspidate or attenuate, 

 laxly clasping the fruit or erect-patent, setose, felted ; peduncles dense- 

 felted and short-aciculate ; petals white, broadly obovate, very large 

 and overlapping, as in dloersifoUus (three-eighths of an inch some- 



