366 RUBUS ADSCTTUS AND K. MUTABILIS. 



5. Folia exsiecata, non nigricaiitia nee reflexa, crassiora quam in S. nigri- 



cante, Fr., sa^pe glaberrima. Stipulfe minores ; pedicellus et 

 stylus elongatus, pedicellus nectariiim bis terve superans. Ovaria 

 glabra vel pilosa, vel etiam tomentosa.* [Bicolores, Borr.) 

 iS. hiculor, Elirh., etc. 



6. Friitex nanus, ramosus. Folia lata, foliis 5. caprece non valcle absiniilia. 



Pubes araelinoidea. Amenta terminalia ; ovaria glabra ; necta- 

 rium unicuni. {Hastata, Borr.) 

 S. lanata, L.+ 



RUBUS ADSCITUS, Genev., AND R. MUTABILIS, Genev. 

 By T. R. Archer Briggs. 



Throuali the exiiniintitioii of some Continental Rnhi Ijeloiigino- to Mr. 

 Baker's lierhariuni, I am now able to assert tlie identity of one or two 

 well-marked Brambles of the neigliboiirhood of Plymouth, that do not 

 come in well under any of the " liabingtoniansie" of the Lond. Cat., with 

 named Continental forms. The first of these that I shall notice is a 

 plant named R. adscitus by M. Genevier, evidently of the group TUIi- 

 caiiles, which is common in linsliy hedges in low situations, and in damp 

 thickets about Plymouth. It has characters so distinct and well-marked, 

 that I cannot see how those adopting- Professor Babington's views can 

 hesitate to regard it as a species, or those falling in witli Mr. Baker's ar- 

 rangement of the Rubi. in Hooker's ' Student's Flora,' fail to call it a sub- 

 species. It agrees so exactly both with M. Genevier's specimens of R. 

 adscitus, and witli his description of it in " Kssai Monographique snr les 

 •Ilnbus (In bassin de la Loire, pp. 116-118, that I give a translation of 

 the latter :— 



" R. adscittis, G. Genev. Mem. de la Soc. Acad, de M. et L. t. viii. p. 

 .88 ; Tirage a part, l""- Ess. p. 23. R. rosncai/s, Bor. Fl. t. ii. p. 192 

 (non W. et N.) ; Arron. Not. snr quelques pi. crit. du Morb. ]). 27 

 (1863). (Comparer avec R. viicatis, God. et Gr., Fl. Fr. t. i. p. 546. 



" Stem with rather blunt angles, the surface on the sides flat or slightly 

 fnrrowed, striate, rather stout, rough, hairy, with scattered setae, and nn'- 

 equal, slender, straight, sharp prickles. Leaves 3-nate, often pedate, 4- 

 nate or 5-nate ; petiole flat, furrowed at the base, rough, hairy, slightly 

 glandular, with unequal, declining, or slightly falcate prickles. Terminal 

 leaflet with petiole equal to i or ^ of its length, broadly oval, with broad 

 base, notched, acuminate, or cuspidate ; lateral leaflets with petioles equal 

 to \ or \ of their length, broadly oval, acuminate or cuspidate, entire or 

 slightly notched at the base, much dilated and deeply lobed on the outer 

 side ; all thin, soft, of a light green, with few decumbent hairs above, 

 deeply toothed, lobed, and serrate ; the teeth acide, unequal ; of a bright 

 green below, rough, with nearly decumbent shining hairs, or more or less 

 white-felted, the veins raised, midril)s prickly. Branches angular, flexu- 

 ose, very rough, with few glands ; prickles unequal, slender, small de- 

 clining. Leaves 3-nate ; petiole not grooved, rough, hairy, slightlv glan- 

 didar; prickles uneqmd, sharp, declining, the largest falcate; stipules 

 lanceolate, rough, slightly glandular ; terminal leaflet with petiole equal 



* Tota facie <*>■. hicolor ab S. 7iigricante, Fr , et atTinibus ejus recedit ; sed aegrei id 

 describitur quod pi-imo intuitu plerumque facile dignoscitur. 



t S. Janata cum S. hasiata multa Imbet communia, sed propter amenta sessilia 

 terminalia cousociari ncquit. 



