50 



4.— HELIOTERES. 



Key to species. 



Leaves hairy above ... ... ... 1. spicata. 



Leaves glabrous 2. angustifolia. 



1. H. spicata, Colebr. ; Masters in Hook. f. Fl. Brit. Ind. i. 366. 



Canton. Fl. purple, August. 



2. H. angustifolia, Linn. ; Benth. Fl. Hongk. 37. Common on 



low ground, Hongkong ; Lantao Island, Hongkong New 

 Territory ; bill near Cbaocbaufu, Swatow. Fl. purple, 

 June. 



5.— PTEROSPERMUM. 



1. P. heterophyllum, Hance ; P. acerifolium, Bentb. Fl. Hongk. 

 39. In woods bebind tbe Buddbist Temple, Causeway Bay, 

 Chaiwan Gap and Longwave Bay, Hongkong ; hill near 

 Cbaocbaufu, Swatow ; Nortb Kiver, in dense wood around 

 a Buddbist Temple, Filoitze. Fl. white, August. 



6.— MELOCHIA. 



1. M. corchorifolia, Linn.; Masters in Hook. f. Fl. Brit. Ind. i. 

 374. Weed in cultivated ground. Canton. Fl. white or 

 pink, September. 



7.— WALTHERIA. 



1. W. indica, Linn, ; W. americana, Benth. Fl. Hongk. 38. In 

 open ground, Hongkong ; seashore east of Kowloon City, 

 Hongkong New Territory ; Hoifung ; Canton. Fl. yeUow, 

 September. 



8.— ABROMA. 



1. A. fastuosum, Jacq. ; A. augusta, Linn. f. ; Masters in Hook. f. 

 Fl. Brit. Ind. i. 375. Happy Valley, Hongkong. Fl. 

 purple, July. 



9.— BUETTNERIA. 



1. B. aspera, Colehr. ; Bentb. Fl. Hongk. 39. Cape d' Aguilar, 

 Hongkong ; Shalotung, 5th and 15th mile on Taipo Road 

 and at Plovers' Cove, Hongkong New Territory. Fl. 



white. May. 



TILIACEAE. 



Key to genera. 



1. Fruit dehiscent 4^ 



Fruit drupaceous or dry, indehiscent... 3* 



2. Stamens all fertile 3, Corchorus. 



Alternate stamens anantherous ... 4. Corchoropsis. 



