152 



3. Flowers distinct 

 Flowers in compact spikes 



4. Corolla tube 2-4 inches long, slender. 

 Corolla campaniilate ... 



5. Stem twining ... 

 Stem erect or decumbent 



6. Leaves lanceolate 

 Leaves cordate ... 



7. Flowers terminal, 2 inches diameter . 

 Flowers under 1 inch diameter 



8. Flowers subsessile 



Flowers on slender pedicels ... 



9. Flowers mostly solitary terminal 

 Flowers racemose or paniculate 



8. Sphenoclea. 

 1. Isotoma. 



5. 

 6. 

 7. 



6. Codonopsis. 



7. Campanumaea. 

 5. Platycodon. 



8. 



9. Campanula. 



9. 

 4. Wahlenbergia. 

 10. Adenophora. 



1.— ISOTOMA. 



1. I. longiflora, Presl; DC. Prodr. vii. 413. On walls and 

 roadsides, Hongkong. Fl. white, September. 



2.— PRATIA. 



1. P. begonifolia, Lindl. ; Piddingtonia ]Siummularia, DC. ; Benth. 

 Fl. Hongk. 196. Hongkong without locality ; Taimo- 

 shan, Hongkong New Territory ; Lofoushan. Fl. purplish 

 blue, February. 



3.— LOBELIA. 



Key to species. 



1. Corolla lobes about equal in length, 



anthers all bearded at apex ... 2. 



Corolla lobes unequal, 2 anthers only 



bearded ... ... ... ... 1. radicans. 



2. Leaves ovate or orbicular ... ... 2. afinis. 



Leaves narrow-lanceolate or linear ... 3. chinensis. 



1. L. radicans, Thunb. ; Clarke in Hook. f. Fl. Brit. Ind. iii. 425. 

 On Victoria Peak and at Taitam Tuk, Hongkong ; 

 Lantao Island and Taimoshan, Hongkong New Territory ; 

 Hoifung ; Lienchow River. Fl. pinkish, September. 



3. L. affinis, fVall. ; Clarke 1. c. 424. Hongkong in ricefields and 



ravines ; Phoenix Mt. and near Yit-hai village, Swatow ; 

 Dane's Island, Whampoa. Fl. white, April. 

 3. L. chinensis, Lour. ; DC. Prodr. vii. 360. Wet places ; 

 Hongkong without locality ; Swatow ; near Canton ; 

 Pakhoi. Fl. blue, March— April. 



4.— WAHLENBERGIA. 



1. W. gracilis, A. DC; W. agrestis, A. DO. ; Benth. Fl. Hongk. 

 197. Hongkong without locality ; Lantao Island and 

 Kwaichong, Hongkong New Territory ; Pakhoi. Fl. 

 blue, March — August. 



