147 



37.— ARTEMISIA. 

 Key to species. 



1. Leaves finely divided or setaceous ... 2. 

 Leaves broad, entire or with broad 



segments ... ... ... ... 5. 



2. Leaves white beneath ... ... ... 1. vestita. 



Leaves green ... ... ... ... 3. 



3. Leaves all tr^innatifid 4. 



Upper leaves simple, capillary ... 2. scoparia. 



4. Heads about ^ inch broad ... ... 3. annua. 



Heads about ^ inch ... ... ... 4. apiacea. 



5. Leaves ovate, serrate ... ... ... 5. anomala. 



Leaves pinnatifid ... ... ... 6. 



6. Leaves white beneath .. . ... ... 6. vulgaris. 



Leaves green 7. 



7. Flowers about -^ inch broad ... ... 7. japonica. 



Flowers about \ inch broad ... ... 8. lactiflora. 



1. A. vestita. Wall. ; Hook. f. Fl. Brit. Ind. iii. 326. Lienchow 



River. Fl. white, December. 



2. A. scoparia, Waldst. et Kit. ; Hook, f . 1. c. 323. Canton ; Lien- 



chow River ; North River. Fl. white, August-December. 



3. A. annua, Linn.; Benth. Fl. Hongk. 187. Repulse Bay, 



Hongkong. Fl. white, October. 



4. A. apiacea, Hance in Walp. Ann. ii. 895. In rice fields near 



Canton. Fl. yellowish, . 



.5. A. anomala, S. Moore in Journ. Bot. 1875, 227. Grassy hills 

 100 miles north of Canton ; Lienchow River ; Lofoushan. 

 Fl. white, August-December. 



6. A. vulgaris, Linn. ; Benth. Fl. Hongk. 187. In the Happy 



Valley, Hongkong ; Castle Peak, Hongkong New Territory ; 

 Swato w ; Lienchow River. Fl. white, August— December. 



7. A. japonica, Thunb. ; Benth. 1. c. 186. At Chaiwan, Hong- 



kong ; Hongkong New Territory without locality ; Lien- 

 chow River. Fl. white, October-December. 



8. A. lactiflora. Wall. ; DC. Prodr. vi. 115, A weed in Botanic 



Gardens, Hongkong ; Canton on brick rubbish ; Lienchow 

 River ; North River. Fl. white, December. 



38.— GYNURA. 



Key to species. 



1. Veinlets enclosing long linear spaces ... 1. ovalis. 

 Spaces (enclosed by veinlets) short ... 2. 



2. Leaves pinnatifid .' 2. pinnatifida. 



Leaves entire 3. divaricata. 



1. G. ovalis, DC. ; G. Pseudochina, Benth. Fl. Hongk. 189. In 

 ravines of Mt. Victoria and other places, Hongkong ; 

 Lantao Island and Taimoshan, Hongkong New Territory ; 

 near Chaochaufu ; Pakhoi. Fl. orange-coloured, April- 

 December. 



31615 



K2 



