129 



catchwater, Hongkong New Territory ; in the Sheung- 

 kintai ravine of the White Cloud hills, Canton ; Sanning. 

 Fl. white, September. 



2. A. chrysotricha, Palibin in Bull. Herb. Boiss. ser. 2, yi. 20. 



Banks of Han River ; North-west River. Fl. white or 

 mauve. May. 



3. A. Thwaitesiana, Maxim. ; Hedyotis Thwaitesiana, Hance in 



Journ. Bot. 1868, 298. At the Shiuhing Pass, West 

 River, Fl. white, February. 



1 1 .— OPHIO RRHIZA. 



Key to species. 



1. Flowers 3 lines long ... 

 Flowers 6-8 lines long... 



2. Leaves obtuse at base ... 

 Leaves acuminate at base 



1. pumila. 



2. 



2. japonica. 



3. cantonensis. 



1. 0. pumila, Champ. ; Benth. Fl. Hongk. 147. In ravines of 



Mt. Victoria and Mt. Gough and at Wongneichong, 

 Hongkong ; Lantao Island at 1400 ft. among stones 

 under scrub ; Lofoushan. Fl. white, May. 



2. 0. japonica, Blume ; O. Eyrei, Champ. ; Benth. Fl. Hongk. 



147. Mt. Parker, and in moist ravines, Hongkong ; 

 Lantao Island and Taimoshan, Hongkong New Territory ; 

 on the slopes of the Phoenix Mt., Swatow. Fl. white, 

 March. 



3. 0. cantonensis, Hance in Ann. Sc. Nat. 4me s6rie, xviii. 222. 



Taimoshan, Hongkong New Territory ; Swatow ; Lien- 

 chow River ; Tingushan on the West River. Fl. white, 

 February. 



IS.— MUSSAENDA. 



Key to species. 



1. Calyx teeth much longer than tube ... 1. frondosa. 

 Calyx teeth not longer than tube ... 2. 



2. Whole plant pubescent 2. pubescens. 



Whole plant nearly glabrous; calyx 



teeth very short ... ... ... 3. 



3. Leaves narrow at base 3. glabra. 



Leaves ovate ... ... ... ... 4. erosa. 



1. M. frondosa, Linn. ; Hook. f. Fl. Brit. Ind. iii. 89. West 



River. Fl. yellow, May. 



2. M. pubescens, Ait.f. ; Benth. Fl. Hongk. 153. Very common 



in Hongkong ; Swatow ; Macao ; West River. Fl. 

 yellow. May. 



3. M. glabra, Hook, et Arn. Bot. Beech. Voy. 264 nan Vahl. 



Hillside near Yit-hai, Swatow ; Lienchow River. Fl. 

 yeUow, May. 



21616 I 



