KOSACE.E. 



Calyx pubescent on the back. (8) 



(S) Calyx pabascent and beset with a small prickles R. taitcexsis. 



Calyx pubescent but not prickly R- shinkcsnsis. 



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



R. pectinettns. 



Leaves broadly ovate, irregularly lobate, acuminate at the base 



R. Larriberiianus. 



(10i Leaves not lolled, irregularly dentate, glabrous above, white cottony, 

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



at the base R. SuinliceL 



Leaves more or less lobad. 1 11 

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



silkv tomentose R. mduccamis, R. formosensis? 



Leaves beneath covered with cottony wools. (12) 



(12 1 Creeping, prostrate, with rounded 5-lobed leaves R. penfcdobns, 



8 jleiit, but not creeping, loaves more or less elongate (13) 



(1>) Leaves more or less rounded, crenulat^ with thick cottony wools 



R. Rdfel Tnx var. lanatus. 



Leaves more or less eloag.ita, acutely serrate with thinly cottony wools. 1 14 



(14) Flowers s. nailer, calyx-lobes 5 mm. long, entire R. nantcensls. 



Flowers larger, calyx-lobes lacerato -serrate #. randaiensts. 



(15 Leaflets 3. (16) 



Leaflets 5 or more than ~>. (18) 

 (1C) Leaves bsneath whitish, covered with thinly cottony wools. . . R. parvifo 



Leaves beneath slightly velvety or nearly glabrous, without whitish 

 cotton (17) 



(17) Leave? nearly glabrous, b3s.et wita minute prickle? underneath along 



the costa R. fasciculatus. 



Leaves velvety on both surfaces R. Tahcanianus. 



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

 Plants more than 20 cm. long (20) 



(19 I -s glabrous R. degans. 



Leaves hirsute. .R. Jdrswd-s. 



