48 



5.— URENA. 



Key to species. 



Leaves orbicular toothed or broadly 



lobed ... ... ... ••• !• lobata. 



Leaves deeply 3- or 5-lobed ... * ... 2. sinuata. 



1. U. lobata, Linn. ; Benth. Fl. Hongk. 34. Common on roadsides 



in Hongkong ; Hoifung. Fl. purple, August. 



2. U. sinuata, Linn. ; Benth. 1. c. 34. Common on roadsides in 



Hongkong ; near Lowu, Hongkong New Territory ; 

 Hoifung. Fl. purple, October. 



6.— HIBISCUS. 



Key to species. 



1. Bracteoles free or nearly so ... ... 2. 



Bracteoles connate ... ... ... 3. 



2. Leaves digitate 1. Trionum. 



Leaves simple ... ... ... ... 4. 



3. Leaves orbicular 4. tiliaceus. 



Leaves lanceolate 5. rosa-sinensis. 



4. Herb 2. Abelmoschus^ 



Shrub ... ... ... ... ... 3. mutahilis, 



1. H. Trionum, Linn.; DC. Prodr. i. 453. At Kowloon-tsai, 



Hongkong New Territory. Fl. yellow marked with 

 purple, July. 



2. H. Abelmoschus, TJnn. ; Benth. Fl. Hongk. 34. At Chaiwan 



and on Peak Road, Hongkong ; on Mawan Island and 

 near Sanwai, Hongkong New Territory; North and 

 Lienchow Rivers. Fl. yellow marked with purple, 

 August. 



3. H. mutabilis, Linn.; DC. Prodr. i. 452. On Mt. Gough, 



Hongkong ; Lantao Island, Hongkong New Territory ; 

 on river bank near Chaochaufu. Fl. white changing to 

 pink, September. 



4. H. tiliaceus, Linn. ; DC. Prodr. i. 454. Common on the 



seashore, Hongkong ; at Tai-o on Lantao Island, Hong- 

 kong New Territory. Fl. yellow with a red eye, July to 

 October. 



5. H. rosa-sinensis, Linn.; DC. Prodr. i. 448. Near Shatan 



and Lienchow Kiver. Fl. red, white and yellow. Summer. 



7.— BOMBAX. 



1. B. malabaricum, DC. Prodr. i. 479. Cultivated in Hongkong ; 

 ravines above Hahang, Hongkong New Territory ; 

 Chaochaufu, Swatow. Fl. red, March. 



