Duchesnea 



ROSACEAE 



Rubus 



enlarged. Southern and eastern Asia; locally in An., Ki., Ku. Roadsides and 

 meadows. Fig. 157. 



12. Rubus Linn. Brambles Slitl^JR (Hsuan Kou Tzu Shu) 

 Erect or climbing deciduous or evergreen shrubs (ours) or herbs, mostly with 

 prickly stems: lvs. alternate, simple or compound: infl. various: fls. mostly 5-parted, 

 white, pink or red; calyx persistent, without bractlets: receptacle convex, not much 

 enlarged, bearing an aggregate fr. of 1-seeded drupelets. 500 species, widely distri- 

 buted; 150 in China. (Latin: ruber, red.) 



Key to the Species 



a. Lvs. simple. 



b. Fls. large and solitary, on the ends of lty. branches. 



Lvs. deeply 3-5-lobed or cleft 1- 



Lvs. serrate, not lobed or cleft 2. 



bb. Fls. in panicles or racemes. 



c. Lvs. densely tomentose beneath. 



Lvs. ovate, often slightly angled, gray-tomentose and 



coarsely reticulate beneath; nerves dark brown 3. 



Lvs. broadly ovate to nearly orbicular in outline, con- 

 spicuously angled or lobed; veins and petioles, as 



well as If. blades, white-tomentose 4. 



cc. Lvs. glabrous or pubescent, but not tomentose. 



Calyx tomentose; calyx and pedicels glandular-prickly. 5. 

 Calyx and pedicels glabrous or pubescent, not tomentose 

 or glandular. 

 Lvs. lobed and finely dentate, pubescent beneath: 



calyx pubescent outside 6. 



Lvs. doubly and sharply serrate, glaucous beneath: 

 calyx glabrous outside, tomentose in the sinuses 



and within « ■ 



aa. Lvs. compound. 



d. Lvs. mostly trifoliolate, at least those of the frtg. brs. 

 e. Fls. large and solitary, or in loose clusters of 2-5. 



Fls. solitary on the ends of lfy. lateral brs.: fr. red .. 8. 



Fls. solitary, or in loose clusters of 2-5: fr. black 9. 



ee. Fls. smaller and several to many, variously arranged, 

 f. Pedicels and sometimes the calyx prickly. 



Calyx and pedicels puberulent, not glandular 10. 



Calyx and pedicels glandulat -hairy 11- 



ff. Pedicels and calyx not prickly. 



Calyx and pedicels glandular-hairy 12. 



Calyx and pedicels densely haiiy, not glandular. 

 Calyx and pedicels densely brown-hairy: plant 



unarmed or with very small weak prickles .. 13. 

 Calyx densely white-tomentose: plant sparingly 



prickly 14- 



dd. Lvs. mostly 5-7-foliolate (sometimes trifoliolate on frtg. brs.) 

 Calyx glandular-hairy. 

 Brts., petioles, pedicels and calyx covered with long stiff 



twisted gland-tipped hairs 15- 



Brts. and petioles pubescent, not glandular: pedicels and 



163 



R. chingii 



R. corchorifolius 



R. pacificus 



R. tephrodes 

 R. hupehensis 



R. lambertianus 

 R. trianthus 



R. thunbergii 

 R. canadensis 



R. occidentalis 

 R. parvifolius 



R. phoenicolasius 



R. irenaeus 

 R. kulinganus 



R. rosaefoliu8 



