10. 



55 



Flowers in corymbs 



Flowers in panicles 



Panicles large, terminal 

 Panicles small, axillary- 

 Spiny shrubs 



Unarmed shrubs 



Flowers in long-stalked corymbs 

 Flowers in short-stalked panicles 



l.^EVODIA. 



Key to species. 



7. Murray a. 



8. 



8. Clausena, 

 5. Glycosmis. 



9. Atalantia. 



10. 



4. Acronychia. 



5. Glycosmis. 



1. Leaves trifoliate 1. triphylla. 



Leaves pinnate... ... ... ... 2. 



2. Peduncles glabrous ... ... ... 2. meliaefolia. 



Peduncles velvety ... ... ... 3. rutaecarpa. 



1. E. triphylla, DC; E. Lamarckiana, Benth. Fl. Hongk. 59. 



Happy Valley, Taitam Tuk and Mt. Grough, Hongkong ; 

 Tin-tso-ngam, Hongkong New Territory ; hill near 

 Chaochaufu, Swatow. Fl. greenish, April. 



2. E. meliaefolia Benth. 1. c. 58. In the Happy Valley woods, 



very common up to 400 ft. on Mt. Gough, Hongkong ; 

 Hoifung. Fl. cream-coloured, September. 



3. E. rutaecarpa, Benth. 1. c. ; Hook. f. Fl. Brit. Ind. i. 490. 



Lienchow River. Fl, , August. 



5. 



2.— ZANTHOXYLTJM. 



Key to species. 

 Stem erect ... ... ... ... 2. 



Stem climbing ... ... ... ... 4. 



Petiole cyclindric ... ... ... 3. 



Petiole winged ... ... ... ... 1. alatum. 



Leaflets 1-2 inches long ... ... 2. Avicennae. 



Leaflets 4-5 inches long ... ... 3. myriacanthum. 



Leaflets 1-7 5. 



Leaflets 15-25 ... ... ... ... 4. cuspidatum. 



Leaflets copiously armed with hooked 



prickles ... ... ... ... 5. nitidum. 



Leaflets almost unarmed ... ... 6. ovalifolium. 



1. Z. alatum, 5o3;i. ; Hook. f. Fl. Brit. Ind. i. 493. Lienchow 



Eiver. Fl. yellow. May. 



2. Z Avicennae, D C. ; Benth. FL Hongk. 58. Happy Valley 



woods and Mt. Gough, Hongkong ; Lantao, Hongkong 

 New Territory ; Swatow; Lanf a Mt., Hoifung,; Macao; 

 Pakhoi. Fl. white, September. 



3. Z. myriacanthum, Wall. ; Hook, f . Fl. Brit. Ind. i. 496. 



Shalotung and near Taipo, Hongkong New Territory. 

 Fl. . 



4. Z. cuspidatum, Champ. ; Benth. Fl, Hongk. 58. Mt. Gough 



and Mt. Parker, Hongkong ; Phoenix Mt. and near 

 Chaochaufu, Swatow. Fl. reddish, February. 



