1.5 cm. longo, minutissime pulverulente), nervis laterali- 
bus quattuor vel quinque supra glaberrima, vivo mitida 
et atroviridia, siccitate stramineo-viridia, nervis non con- 
spicue elevatis, subtus pallide viridia, nervis omnibus 
prominenter elevatis, statu Juvenile minutissime fusco- 
tomentulosa, sine petiolo usque ad 12 cm. longa, 4.5 cm. 
lata. Flores in racemis laxis, multifloribus et axillaribus, 
plus minusve 4 cm. longis, pedunculo minutissime pul- 
verulente, gracile. Perianthii pars basalis ovoidea- 
dilatata, plus minusve 10 mm. longa, 6 mm. in diametro, 
intus glabra, extus pilis longis appressis subdense obtecta: 
tubus asymmetricus obconicus, usque ad 10 mm. longus, 
basi 4 mm. sed apice plus minusve 12 mm. diametriens, 
intus glabrus, extus subdense pilosus, in faucis ore con- 
spicue inciso; limbus oblongo-lanceolatus vel ovalis, 
apice truncatus sed mucronatus vel prominenter apicu- 
latus, 20 mm. longus, usque ad 12 mm. latus, intus 
glabrus, extus pilosus. Columna genitalis plus minusve 
3mm. longa, breviter stipitata, per 0.5 mm. sex divisa, 
lobis pseudostylinis triangularibus, acutis. Stamina sex 
columnae adnata, antheris linearibus, quattuor 0.8 mm. 
longis, cetera 1.2 mm. longis, longitudinaliter dehiscen- 
tibus. Capsula ellipsoido-ovoidea, costis conspicuis, basi 
longe attenuata, apice breviter mucronata, plusminusve 
9 em. longa, 4 em. in diametro; semina obovoideo- 
orbicularia, apice truncata, parte centrale valde cordi- 
forme, 0.8 mm. longa, 1.8 mm. lata. 
Cotompia: Comisaria del Vaupés, Rio Kuduyari (tributary of Rio 
Vaupés). Alt. about 700-800 ft. ‘‘Vine. Fruit pendent, green. 
Flowers brownish purple, striped with yellow-green.”’ October 16, 
1952, Richard Evans Schultes & Isidoro Cabrera 17856 (Vyrr in Herb. 
Gray ). 
Aristolochia medicinalis, which falls into Hoehne’s sec- 
tion MMestipulatae, seems to correspond vegetatively 
rather closely with .f. me/astoma Manso., but the inflores- 
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