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strongly armed, darker in colour than R. hystrix, with finer leaf- 

 toothing, and laxer pan. 



There is a very interesting bramble which the Rev. E. S. Mar- 

 shall has been observing for the last few years at Munstead, Surrey 

 (where in his company I saw it growing in 1891), and which in 

 1891 he also found in good quantity in a wood at a short distance 

 from the Bridge of Lochay, near Killin, Perthshire. It seems to 

 be one of our many links between the Casii and our two preceding 

 groups, having the foliage and pan. of R. dumetorum, the habit, 

 weak growth and filiform stipules of the Bellardiani, with the very 

 crowded aud exceedingly mixed armature of the Koehleriani. I 

 propose placing it in our list next after R. tereticaulis, and calling it 

 (as Mr. Marshall has suggested) R. britannicus. I add here a brief 

 description : — 



R. britannicus, n. sp. St. bluntly angular or roundish, 

 glaucous, pale brown or yellow tinged with red, thinly hairy, densely 

 clothed with prickles, acicles, bristles and stalked glands of various sizes, 

 and coloured like the st. Largest prickles with fine subulate points 

 and very compressed bases, usually declining. L. 3-5-nate, chiefly 

 3-nate, with lateral Its. gibbous or deeply lobed. Lts. thin, green and 

 slightly hairy on both sides, coarsely incise-dentate ; term, broadly 

 ovate or somewhat obovate, cordate, acuminate. Pan. rather short 

 and few-flowered, lax below with patent or patent-erect branches, 

 cylindrical- trunca te above, with fairly long 1-3-flowered branches ; 

 rachis and ped. thinly felted, hairy, with crowded more or less 

 falcate yellowish acicles and pricklets, and numerous stalked glands 

 which very rarely exceed the hairs. Sep. very aciculate and glandular, 

 with long acuminate point, more or less clasping the fruit. Pefc. elliptic, 

 rather large, but not contiguous, white. Stam. exceeding styles. 

 Fr. plentiful. Drupelets rather few and large ; young germens 

 glabrous. Low bushes covering the ground in woods and wood- 

 borders. 



Strongly recalling R. britannicus in many respects (especially in 

 st., 1., and sep.), and yet plainly distinct from it, comes the Rev. A. 

 Ley's East and West Heref. bramble which was named R. velatus 

 Lefv. by Prof. Babington (v. B. E. C. Reports, 1888, 211 ; 1889, 254). 

 This species is described in Genevier's Monogr. ed. 2, p. 97. Here 

 it seems sufficient to say that Heref. specimens, shown me by Mr. 

 Ley in Cowleigh Park last August, differ from R. britannicus, as 

 described above, by 1. rather softer and hairier, and unevenly 

 crenate-serrate, and especially by the longer pan. rounded at top, 

 with more ascending branches, the much closer clothing of short hairs on 

 rachis, the more conspicuously clasping Sep., and the hairy germens. 

 The most marked feature in R. velatus is furnished by the long sep. 

 completely embracing the small fr. In this, as in some other features, 

 it seems rather near to the E. Schleswig R. Jensenii Lge., which, 

 however, has thinner barer 1. and a much more Caesian st. 



I have stated above that it now seems to me desirable to remove 

 R. oigocladus (which I saw growing last summer in Dev. and 

 Somers.) from its old position among the Bellardiani to one among 

 the Egregii as a var. of R. mucronatus. I feel bound to add, though 



Journal op Botany.— Vol. 82. [Feb. 1894.] e 



Mo. Bot. Garden, 



1895. 



