64 



R. davuricus, Pall. Fl. Ross. ii. 24. Lienchow River. Fl. 

 green, April. 



R. virgatus, Benth. Fl. Hongk. 68. Mt. Parker south and 

 Hoktsui, Hongkong ; Lantao Island at 1500 ft., Hong- 

 kong New Territory ; Lofoushan. Fl. green, August. 



R. crenatus, Sieb. et Zucc. ; R. oreigenes, Hance in Journ. 

 Bot. 1869, 116. Lantao Island, Hongkong New Terri- 

 tory ; White Cloud hills. Canton; Swatow ; Hoifung ; 



Kwaisin ; Lienchow River ; Lofoushan. Fl, , June 



to September. 



7.— SAGERETIA. 

 Key to species. 



Leaves rugose ... 

 Leaves smooth ... 



1. rugosa. 



2. theezans. 



1. S. rugosa, Hance in Journ. Bot. 1878, 9. North and Lienchow 



Rivers. Fl. -, October. 



2. S. theezans, Brongn. ; Benth. Fl. Hongk. 68. Common on 



Victoria Peak and elsewhere, Hongkong ; Lantao Island, 

 Taimoshan, Lowu, Hongkong New Territory ; Swatow ; 

 Whampoa ; Macao ; Pakhoi. Fl. white, Winter. 



8.— HOVENIA. 



1. H. dulcls, Thunb. ; Lawson in Hook. f. Fl. Brit. Ind. i. 640. 

 Canton ; Lienchow River ; North River. Fl. yellow, 

 June. 



AMPELIDACEAE. 



1.— VITIS. 



Key to species. 



1. Leaves compound 

 Leaves simple ... 



2. Leaves pinnate .. . 

 Leaves digitate or pedate 



3. Leaflets deeply incised or pinnatifid ... 

 Leaflets entire or toothed 



4. Flowers in small dense long-stalked 



cymes 

 Flowers in loose dichotomous cymes . . . 



5. Leaflets 5 

 Leaflets 3 



6. Leaves digitate 

 Leaves pedate 



7. Stem flattened 



branched 

 Stem round ; peduncle dichotomous 



8. Petals horned at back ... 

 Petals terete at back ... 



peduncle umbellately 



2. 



12. 



1. cantoniensis. 



3. 

 4. 

 5. 



2. serjanaefolia. 



3. heterophylla. 



6. 

 9. 



7. 

 8. 



4. planicaulis. 

 3. heterophylla. 



5. corniculata. 



6. japonica. 



