250 



1. B. nivea, Gaud. ; Benth. Fl. Hongk. 331. In ravines on 



Mt. Victoria, and elsewhere, Hongkong ; cultivated in 

 Hongkong New Territory ; Yit-hai, Swatow ; Macao. 

 Fl. October. 



2. B. densiflora, Hook, et Am. ; DC. Prodr. xvi. i. 215. 



Abundant on Victoria Peak in tbe vicinity of Mountain 

 Lodge, Hongkong ; Lienchow Eiver. Fl. December — 

 March. 



3. B. grandifolia, Wedd. ; B.platyphylla, var. macrophylla, Wedd.; 



DC. 1. c. 213. Kwangtung without locaKty. Fl. June to 

 August. 



4. B. polystachya, Wedd. ; Hook, f . Fl. Brit. Ind. v. 579, Lienchow 



Kiver. Fl. August. 



5. B. platyphylla, D.Don ; Hook. f. 1. c. 578. Near Canton ; 



Lienchou River ; North Kiver ; Lofoushan. Fl. August. 



24.— POUZOLZIA.. 



Key to species. 



1. Leaves serrate ... ... ... ... 1. ovalis. 



Leaves entire ... ... ... ... 2. 



2. Nearly all leaves alternate ... ... 2. indica. 



Nearly aU leaves opposite ... ... 3. hirta. 



1. P. ovalis, Miq. ; P. viminea, Wedd. ; Hook. f. Fl. Brit. Ind, 



V. 581. Below Molam on the West Eiver. Fl. May. 



2. P. indica, Gmid. ; Benth. Fl. Hongk. 331. Robinson Road 



and Mt. Victoria, Hongkong ; Macao. Fl. July. 



3. P. hirta, Hassk. ; Memorialis hispida, Ham. ; Benth. 1. c. 332. 



In shady places, Hongkong ; Wliite Cloud hills. Canton ; 

 Lofoushan. Fl. June. 



25— VILLEBRUNEA. 



1. V. fruteseens, Blumr ; Benth. Fl. Hongk. 332. Victoria 

 Peak and Mt. Parker, Hongkong ; Taimoshan, Hongkong 

 New Territory. Fl. March. 



JUGLANDACEAE. 



Key to genera. 



1. Leaves serrate ... ... ... ... 2. 



Leaves entire ... ... ... ... 2. Engelhardtia. 



2. Female flowers in loose spikes ... 1. Pterocarya. 

 Female flowers in strobiles ... ... 3. Platycarya. 



1.— PTEROCARYA. 



1. P. stenoptera, CDC. ; Prodr. xvi. ii, 140. Lienchow River. 

 Fl. white, April. 



