CYTINACEA. 4] 
2. Cytinus andrieuxii, Hemsley. 
Cytinus americanus, Hook. f. in DC. Prodr. xvii. p. 108, pro parte. 
‘Bdallophytum andrieuzii, Hichl. in Bot. Zeit. 1872, p. 715, t. 8B. 
SoutH Mexico, between Huauapan and Oaxaca (Andrieux, 50). Hb. Kew. 
[Pilostyles thurberi, A. Gr. in Mem. Am. Acad. n.s. v. p. 326, et Torr. Bot. U.S. & 
Mex. Bound. Surv. t. 52, was collected near the Gila; whether north or south is not 
recorded. It was parasitical on the branches of Dalea emoryi. | 
[The small order Nepenthacee is restricted to the tropics of the Old World. | 
Order CXV. ARISTOLOCHIACE. 
Aristolochiacee, Benth. et Hook. Gen. Plant. iii. p. 121. 
Herbs or shrubs, many of them twiners, and some lofty climbers. There are five 
genera, comprising about 200 species, which are generally diffused in warm countries, 
‘rarer in temperate regions, especially in the southern hemisphere. 
1. ARISTOLOCHIA. 
Aristolochia, Linn. Gen. Plant. n. 1022; Benth. et Hook. Gen. Plant. iii. p. 123. 
Herbs or shrubs, many of them climbers, and some of them very tall climbers; very 
few arboreous. Nearly 200 species are enumerated, and they cover the whole range of 
the order. Guaco mexicana, Liebm. in Forhandl. Skand. Naturf. Kiobenh. 1847, p. 203, 
is doubtless a species of this genus. 
1. Aristolochia arborea, Lind.; DC. Prodr. xv. 1, p. 477; Bot. Mag. t. 5295. 
Soura Mexico, Chiapas (Ghiesbreght). Hb. Kew. 
2. Aristolochia brevipes, Benth. Pl. Hartw. p..15; DC. Prodr. xv. 1, p. 441. 
Einomeia brevipes, K1. in Monatsb. 1859, p. 606. 
Soura Mexico, Aguas Calientes (Hartweg). Hb. Kew. 
6. wrightii, Duchar. in DC. Prodr. xv. 1, p. 441; Seem. Bot. Voy. ‘Herald,’ 
p. 331, t. 72 (species). 
New Mexico.—Norta Mexico, Sierra Madre (Seemann, 2175), region of San Luis 
Potosi, 6000 to 8000 feet (Parry & Palmer). Hb. Kew. 
3. Aristolochia bracteosa, Duchar. in Ann. Sc. Nat. série 4, ii. p. 37, et in DC. 
Prodr. xv. 1, p. 441. 
Mexico (Mogino & Sessé). 
4. Aristolochia costaricensis, Duchar. in DC. Prodr. xv. 1, p. 450. 
Howardia costaricensis, Kl. in Monatsb. 1859, p. 614. 
Costa Rica (Hoffmann ; Warscewicz). 
BIOL. CENTR.-AMER., Bot. Vol. III., October 1882. 9 
