168 



2.— RAUWOLFIA. 



1. R. chinensis, Hemsl. ; Ophioxylon chinensis, Hance in Journ. 

 Bot. 1865, 380. Eobinson Road, Peak Koad and near 

 Aberdeen New Road, Hongkong ; along the West River, 

 up to the frontier of Kwangsi. Fl. white, April to July. 



3.— ALYXIA. 



1. A. sinensis, Champ. ; Benth. Fl. Hongk. 219. On rockj hiUs, 

 in ravines and woods, common in the island, Hongkong ; 

 Hahang and Tin-tso-ngam, Hongkong New Territory : 

 Swatow ; Kwaisin, Hoifung. Fl. white, July. 



4.— OERBERA. 



1. C. Odollam, Gaertn. ; Benth. Fl. Hongk. 219. At Aberdeen. 

 Shaukiwau and elsewhere near the sea, Hongkong ; Hong- 

 kong New Territory without locality. Fl. white. May. 



5.— VINCA. 



1. V. rosea, Linn. ; Benth. Fl. Hongk. 220. In waste places, 

 Hongkong ; Macao. Fl. pink or white, Summer. 



6.— POTTSIA. 



1. P. cantonensis. Hook, et Am.,; Benth. Fl. Hongk. 222. Taitam 

 Tuk and in the Glenealy ravine, Hongkong ; Lanfa ]\It., 

 Hoifung ; Lofoushan at 3000 ft. Fl. pink, June. 



7.— WRIGHTIA. 



1. W. pubescens, R. Br. ; DC. Prodr. viii. 405. Sanniiig ; North 

 River ; Northwest River. Fl. white, July. 



8.— NERIUM. 



1. N. odorum, Soland. ; Hook. f. Fl. Brit. Ind. iii. 655. Kwang- 

 tung without locality. Fl. rose-white or yellow, . 



9.— STROPHANTHUS. 



1. S. divergens, Grah. ; Benth. Fl. Hongk. 220. Common at 

 low levels, but less so higher up the hills. Hongkong ; 

 Taimoshan, Hongkong New Territory ; hill near Chao- 

 chaufu ; Macao ; Pakhoi. Fl. yellow', April. 



10.— EODYSANTHERA. 



Key to species. 



Leaves green underneath ; corolla 



scarcely above 1 line long I. micra,it/ia. 



Leaves glaucous underneath ; corolla 



2 lines long 2. rosea. 



