Page:Journal of botany, British and foreign, Volume 9 (1871).djvu/396

 3(58 EUBUS ADSCTTUS AND U. MUTABILIS.

large light pink petals, and grevish-green hue of the whole plant are also remarkable.

Til is J^ ramble is common and widely distributed about Plymouth, and f he following are among its local stations : — Crabtree ; near Rumple Quarry and elsewhere in the Plym Valley ; about Plympton and between that place and Plymbridge ; at Ivybridge, and in the valley of the Ernie, between it and Harford ; and at Buekland Monachorum.

Mr. Bdker's herbaiinm contains a genuine specimen of the Riihiis ohliqnns of Wirtgen, and this I have compared with the Plymouth plant considen d identical by the Pev. A. Bloxam, and described by him in Journ. Pot. Vol. VIII. pp. G9, 70. The points of diflerence between these two Brambles seem to me very considerable, and I regard the Ply- mouth one as much nearer the R. uiiitaliiJis of Genevier. It so greatly rcsendjles this that I shall give a translation of M. Genevier's account of it, for comparison with a description of the English plant, and afterwards notice the points of dissimilarity between specimens of the two; those of R. iniitnhilis, trom Genevier himself, in IMr. Baker's herbarium; those of the other in my own.

The following is from pp. 106-108 of Genevier's ' Essai Monographique sur les Rubus du bassin de la Loire' : —

" R. mutoh'dia, Gast. Genev. Mem. Soc. Acad, de M. et L., t. viii. p. 84; Arrondeau, PI. crit. du Morb. p. 29.

" Stem angular or obtuse, reddish, with furrows flat on the sides, chan- nelled at the top, with few silky hairs, very many glandular ones, very imequal declining prickles, some falcate, the longest slender with enlarged bases, placed over the whole surface of the stem, sharp. Leaves 3-nate and pedate 5-nate; petiole finely furrowed, hairy, glandidar, with hooked prickles ; the terminal leaflet with a stalk \ of its length, broadly oval, slightly cordate, gradually acuminate ; side leaflets with long stalks, oval, dilated' on the outer side, narrowed and slightly notched at the base, nar- rowly acuminate; basal stalked, oval, acuminate, narrowed at each end; all thick, coriaceous, of a deep green, with scattered decumbent hairs above, the teeth broad, spreading, umriual, sharply pointed ; grey or sil- very-white below, rough, felted, with prominent veins, and prickly midrib. Flowering-shoot bluntly angular, flexnose, slightly hairy, very glandular, with narrow, unequal, declining or hooked prickles. Leaves 3-nate, some pedate 4-nate or 5-nate ; petiole flat or finely channelled, hairy, glandular, aciculate, with bent or fiilcate prickles; terminal leaflet with petiole equal to 7 of its length, broadly oval, sometimes rhomboidal, entire or slightly notched at the base, gradunlly acuminate ; side leaflets with stalks equal to yL or Jj- of their length, oval, gradually acuminate, lobed and dilated on the outer side ; all thick, of a fine deep green, and almost glabrous above, with large, shallow, spreading, sharp-pointed teeth ; grey or white felted below, more rarely green when the plant is in deep shade, with white, prominent, reticulating veins, midrib prickly. Panicle broadly py- ramidal, spreading, compound, branched, lax, leafy, rough, hairy, with red glands, aciculate, with small falcate prickles red at the base, yellow at the top ; two lower branches lengthened out, many-flowered, from the base of 8-nate leaves that they do not equal ; the succeeding ones many or 8- flowered, from the base of foliaceous bracts that they do not equal ; the top ones lengthened out, narrow, small, often single-flowered, from the base of trifid bracts, all furnished with numerous red glands, aciculi, and

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