1902.] 



OBSERVATTONS ON THE FLORA OF JAPAN, 145 



Stems terete, glabrous, stont, attaining about 8 mm. across, decuiiibent 

 with a considerable length and rooting at the end, laxly prickly, reddish- 

 castaneous in the old one ; prickles patent, straight or incurved, gracile, 

 very sharp, attaining 5 mm. in length. Leaves as in those of B. corecmus 

 Miq., but yellowish green (not deep green) and duller above and adpressed 

 hoary-tomentose beneath (but pale green and thinly pubescent in those of 

 tlie flowering branches) and the apex of the leaflets more obtuse as in those 

 of li. parvifforus Linn. Cymes terminal and often axillary on the lateral 

 branches of this year, 21-10 cm. across ; the rachis pubescent as are the 

 peduncles and pedicels, rather densely many-flowered ; peduncles patulous, 

 loosely prickly or unarmed ; pedicels erect-patent, unarmed, about 4-20 mm. 

 long ; bracts tripartite or trifid into linear lobes, shorter than the peduncles, 

 attaining about 9 mm. long, pubescent ; bracteoles minute, subulato-linear. 

 Flowers about li-ljcm. across, pedicellate. Ca^-x thickish, 5-parted, 

 light green and pubescent and unarmed externally, white-tomentose inter- 

 nally in the lobes; lobes deltoid-lanceolate or oblong-lanceolate, setaceo- 

 acuminate, reflexed and about 7i-8 mm. long in flower, but erect-patent 

 in fruit; the tube depressed, lined by a glabrous disk within. Petals 

 5, small, erect and connivent, subrhombeo-orbicular or orbicular-ovate, obtuse 

 and minutely bifid at the apex, minutely and irregularly eroso-serrulate, 

 manifestly unguiculate, thinly puberuleut in the lower portion and the unguis, 

 purple, deciduous, 5-6 mm. long including the unguis which is l|-2 mm. 

 Ion"- 31-54 mm. wide. Stamens numerous, erect, equalling the petals in 

 height, attaining about 5 mm. in length ; filament filiform, glabrous, white 

 but rose above ; anther minute, ovato-elli[)tical. Ovary-cluster nearly sessile, 

 shortly ovoid, the receptacle depressed-conical, glabrous. Ovaries numerous, 

 minute, densely placed, ovate, puljescent, attenuated to the style above ; 

 style terminal, slightly higher than the stamens and petals, filiform, very 

 much longer than the ovary, pubescent below, rose-coloured above ; stigma 

 terminal, oblique, slightly dilated. Fruit depressed-globose, red afterwards 

 turning black; drupels few to several, oval-globose, about 4mm. across, 

 succulent, minutely pulierulent under lens, with a persistent style; stone 

 elliptical, foveolate. Flowers May-June. 



Hab. Prov. Omi : Hikone {T. MaJcinol Nov. 1894; S. Hirase\ July 

 1901, June 8, 1902). 



Probably a hybrid between Ruhus coreamis Miq. and 7?. parvi/oUus 

 Linn. This grows strongly and intricately at some place in the vestige 

 of the ancient castle in Hikone, prov. Omi ; it was found at first by me 

 iu November, 1894. I have named it in cunipliment to Mr. SakugorO 



