44 ARISTOLOCHIACEZ. 
98. Aristolochia taliscana, Hook. et Arn. Bot. Beech. Voy. p. 309; DC. Prodr. 
xv. 1, p. 452. 
Souta Mexico, San Blas to Tepic (Coulter, 1413), Jalisco (Beechey), Manzanilla Bay 
(Barclay), without locality (Hahn). Hb. Kew. 
94, Aristolochia tricaudata, Duchar. in Ill. Hort. t. 523; Bot. Mag. t. 6067. 
Soura Mexico, Chiapas (Ghiesbreght, 800). Hb. Kew. 
25. Aristolochia trilobata, Linn. Sp. Pl. p. 1361; DC. Prodr. xv. 1, p. 444. 
Panama, Chagres (Fendler, 440)—Gviana to Brazit, and in the West INDIES. 
Hb. Kew. 
26. Aristolochia uhdeana, Duchar. in DC. Prodr. xv. 1, p. 465. 
Mexico (Uhde). 
27. Aristolochia variifolia, Duchar. in Ann. Sc. Nat. série 4, ii. p. 65, et in 
DC. Prodr. xv. 1, p. 442. 
SoutH Mexico, Cordillera of Oaxaca (Galeotti, 208). Hb. Kew. 
28. Aristolochia valentina, Duchar. in Ann. Sc. Nat. série 4, ii. p. 39, et in 
DC. Prodr. xv. 1, p. 443. 
MEXICco. 
29, Aristolochia veraguensis, Duchar. in DC. Prodr. xv. 1, p. 458. 
Costa Rica (Warscewicz); Panama, Veraguas (Warscewicz). 
[Aristolochia repens, A. conferta, and A. scandens, Mill. Dict., recorded from Mexico, 
are doubtful species. | 
Series [V. MICREMBRYE. 
Order CXVI. PIPERACE. 
Piperacee, Benth. et Hook. Gen. Plant. iii. p. 125. 
Herbs, shrubs, very few arboreous. About 1000 species referred to eight genera. 
A very large proportion of the species inhabit tropical countries; and the order is 
unrepresented in Europe. 
1. HOUTTUYNIA. 
Houtiuynia, Thunb. Fl. Jap. p. 12; Benth. et Hook. Gen. Plant. i. p. 128. 
A genus of three herbaceous species, whereof one has a wide range from the 
Himalayas through China to Japan, and a second doubtful one inhabits China. 
