50 
4.—HELICTERES. 
Key to species. 
Leaves hairy above ... swe ere er 
Leaves glabrous »^ ec zo e ^ perc E 
l. 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 
TUO; ; hill near Chaochaufu, Swatow. Fl. purple, 
une, 
5.—PTEROSPERMUM. 
Eg MARET Hance ; P. acerifolium, Benth. Fl. Hongk. 
39. woods Behind the Buddhist Temple, Causeway Bay, 
a Gap an d Longrare Bay, Hongkong ; hill near 
Chaochaufu, Swa ; North River, in d d around 
a Buddhist zie ad Filoitze, Fl. white, August, 
6.—MELOCHIA. 
l. M. eorehorifolia, 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. yellow, 
September. 
S.—ABROMA. 
1. A. fastuosum, Jacq. ; A. augusta, Linn. f. ; Masters in Hook, f. 
Fl. Brit. Ind. i. 375. Happy Valley, Hongkong. FI. 
purple, July. 
9.—BUETTNERIA. 
l. B. aspera, eg ; Benth. Fl. Hongk. 39. Cape d' Aguilar, 
Hongkong ; Shalotung, 5th and 15th mile on Taipo Road 
and at [t Cove, Hongkong New Territory. Fl. 
white, May. 
TILIACEAE. 
Key to genera. 
|" Er dehiscent 4. 
ruit drupaceous or dry, indehiscent... 3. 
2. inni all fertile "ed +. 3. Corchorus. 
Alternate stamens osintbenadl «+» 4. Corchoropsis 
