ON THE DUMETORUM GROUP OF RUBI IN BRITAIN. 175 



metorum, var. ferox, R. G. t. 45 A, is a quite different form, which I 

 have never seen in Britain. Of course the name ferox belongs pro- 

 perly to this latter, and the name diversifolhis (by the way, a thoroughly 

 bad one) belongs of right to this form, not to the next, No. 5. R. 

 ScJdeicherl, Leight., is merely a weak shade-drawn form of this, with 

 an oblong terminal leaflet. 



Rubus dumetorum, e. intensiis (Blox.) ; stem nearly round, arcuate- 

 prostrate, sulcate, deep red, thickly armed with very numerous, crowded, 

 unequal setas, aciculi, subpateut and declining prickles, all passing gra- 

 dually into each other, and occupying nearly every portion of the stem. 

 As compared with dlverslfolius, any given inch of barren stem will con- 

 tain half as many again prickles, setae, and aciculi ; as would be the case 

 also with any given inch of the panicle rachis ; leaves ternate or quinate ; 

 stipules filiform, apparently narrower than dlverslfolius ; terminal leaflet 

 broadly obovate, acuminate or cuspidate; the petiohde bearing 20-30 

 prickles, equal one-third of its length ; intermediate leaflets obovate-acu- 

 minate, rather overlapping ; basal leaflets obovate- acuminate, hardly 

 sessile, slightly imbricate, all faintly hairy, dull green above, soft, hairy, 

 but not felted, lighter green beneath, doubly, but not very unevenly 

 dentate-serrate ; flowering-shoot stout, nearly straight, slightly angular 

 above, densely and intensely setose, aciculate, and armed with very fre- 

 quent stout, subpatent and declining prickles ; leaflets ternate, large, 

 about equalling the upper branches, exceeded by the lower; terminal leaf- 

 lets broadly obovate- cuspidate, subcordate ; basal leaflets obovate-acu- 

 minate, strongly lobed externally ; all in texture as those of the stem, 

 but rather more coarsely doubly dentate-serrate; panicle very com- 

 pound, long, leafy, with long, rather divaricate, many-flowered, axil- 

 lary branches and branchlets ; the axillary branches often bearing as 

 many flowers as a whole weak panicle oi dlverslfolius ; peduncles longer, 

 more slender, more divaricate than in that variety ; sepals ovate- 

 attenuate, erect-patent, or clasping the fruit, decidedly more drawn out 

 at end than dlverslfolius, and often strongly aciculate, which this hardly 

 ever is ; petals large, uneven, crumpled, overlapping ; their colour not 

 noted, nor that of the styles or filaments at the late time (October) 

 when I saw this form growing; fruit of few (7-12) unequally ripened 

 largish drupels. 



This form, as nearest allied to cceslus, I have placed last ; conclii- 

 nus, as nearest to cori/Hfollus, comes first. It was originally observed 



