ROSACES. 223 



Calyx pubescent on the back. (8) 



(S) Calyx pubescent and beset with a small prickles It. taitcensis. 



Calyx pubescent but not prickly R. shinkcensis. 



(9) Leaves roundly cordate, slightly 3-lobed, rounded in every respect. . . 



. R. pectinellxs.. 



Leaves broadly ovate, irregularly lobate, acuminate at the base 



li. Lambert ianus.. 



(10) Leaves not lobecl, irregularly dentate, glabrous above, white cottony, 



below, oblong, ovate, acuminate at the apex, truncate or rounded 



at the base R. StuinhceL 



Leaves more or less lobed. (11) 



(11) Leaves beneath covered with velvety wools, stipules lacerate. Calyx 



silky tomentose //. molticcamis, li. formosensis ? 



Leaves beneath covered with cottony wools. (12) 



(12) Creeping, prostrate, with rounded 5-lobed leaves R. pentaldbus^ 



Scaudent, but not creeping, leaves more or less elongate (13) 



(13) Leaves more or less rounded, crenulats with thick cottony wools 



R. Rolfei VID. var. lanaius. 



Leaves more or less elongate, acutely serrate with thinly cottony wools. (14) 



(14) Flowers s:naller, calyx-lobes 5 mm. long, entire R. nantcensis. 



Flowers larger, calyx-lobes lacerato- serrate R. randaiensis* 



(15) Leaflets 3. (16) 



Leaflets 5 or more than 5. (18) 



(16) Leaves beneath whitish, covered with thinly cottony wools . . . R. parvifolius. 

 Leaves beneath slightly velvety or nearly glabrous, without whitish 



cotton (17) 



(17) Leaves nearly glabrous, beset with minute prickles underneath along 



the costa R. fasdculatus. 



Leaves velvety on both surfaces R. Taiwamanus. 



(18) Plants very small less than 15 cm. high, leaves small 8 cm. long. (19) 

 Plants more than 20 cm. long (20) 



(19) Leaves glabrous R. elegans. 



Leaves hirsute. . R. hirsuuts.- 



