219 

 NEPENTHACEAB. 



NEPENTHES. 



1. N. phyllamphora, Willd. ; Hook. f. Fl. Brit. Ind. v. 69. 

 Macao ; Szetsushan, Sanning. Fl. white, August. 



AEISTOLOCHIACEAE. 



Key to genera. 



Stem creeping, short or none .. 

 Stem twining ... 



1. Asarum. 



2. Aristolochia. 



1.— ASARUM. 

 Key to species. 



Perianth lobes caudate 1. caudigerum. 



Perianth lobes not caudate ... ... 2. geophilum. 



1. A. caudigerum, Hancein Journ. Bot. 1881, 142. North River ; 



East River ; Lofoushan. Fl. greenish-purple, November- 

 February. 



2. A. geophilum, Hemsl. Enum. PI. China, ii. 358. Lienchow 



River ; North River. Fl. purplish-green, February-April. 



3.— ARISTOLOCHIA. 



Key to species. 



1. Leaves deeply cordate, less than 3 times 



as long as broad ... ... ... 2. 



Leaves not or slightly cordate, more 



than 4 times as long as broad ... 3. 



2. Leaves with a few pinnate veins ; flowers 



cymose ... ... ... .. 1. Tagala. 



Leaves with only pedate venation ; 



flowers solitary ... ... ... 2. 



3. Leaves shortly cordate ... ... 3. 



Leaves round at the base 



4. Leaves broadest 1 from base ... ... 4. 



Leaves broadest 1 from top ... ... 5. 



Fordiana. 

 Westlandii. 



4. 

 longifolia. 

 Thwaitesii. 



A. Tagala, Cham, et Schl. ; A. Roxburghiana, Kl. ; Hook. f. 



Fl. Brit. Ind. v. 75. Tingushan on the West River. ¥\. 



pale green, July. 

 A. Fordiana, Hemsl. in Journ. Bot. 1885, 286. Mt. Parker 



north, Hongkong ; Taimoshan, Hongkong New Territory 



Fl. , February. 



A. Westlandii, Hemsl. 1. c. 286. Taimoshan, Hongkong New 



Territory. Fl. chocolate-coloured, May. 

 A. longifolia. Champ. ; Benth. Fl. Hongk. 333. Victoria 



Peak and on the south side of Mt. Cameron, Hongkong. 



Fl. chocolate-coloured, March. > 



