cause of its small stature, as its name implies, is allied to 
the complex of A. gracile (Rudge) Engl. and to 4. font- 
oides R. E. Schultes. The type specimen, while a fully 
mature individual, is of note because of its very diminu- 
tive size. 
Cotomspra: Comisaria del Vaupés, Rio Kananari, Cachivera Palito. 
Altitude about 250 m. “‘Epiphyte. Spathe pink. Spadix red.’’ July 
25, 1951. Richard Evans Schultes & Isidoro Cabrera 18183 (Tyrer in 
Herb. Gray). 
Philodendron colombianum PF. E. Schultes sp. 
nov. 
Herba in locis humidis crescens, usque ad 15 pedes 
alta. Folia ovata, apice sensim cuspidato-acuminata, basi 
cordata, usque ad 20 cm. longa, 10 cm. lata, nervis later- 
alibus angulo circiter 80° a costa adscendentibus, margi- 
nem versus conjunctis; petiolus apicem versus callosus, 
plusminusve 18 em. longus, teres, inferne vagina obtec- 
tus. Pedunculus basi in bracteis fibrosis inclusus, plus- 
minusve 9 em. longus, 2 mm. in diametro. Spatha apice 
subacuta, intus alba sed extus purpurascens, 5 cm. longa, 
3.5 em. lata, tubus ventricosus fauce valde contractus, 
3.5 cm. longus, 1-1.5 cm. in diametro. Spadix stipitate, 
5-6 mm. longo suffultus, usque ad 6 cm. longus. In- 
florescentiae pars feminea 2.5 cm. longa, plusminusve 11 
mm. in diametro, pars mascula 2.4 cm. longa. Stamina 1 
mm. longa, 1.2 mm. lata. Pistillum 1-1.2 mm. longum, 
0.8 mm. in diametro. Ovarium quattuor- vel quinque- 
loculare. 
Cotomp1a: Comisarias del Amazonas y Vaupés, Rio Apaporis, Sora- 
tama (above mouth of Rio Kananari) and vicinity. Altitude about 900 
feet. March 26, 1952. Richard Evans Schultes & Isidoro Cabrera 16087 
(Type in Herb. Gray). 
Stenospermatium verecundum PR. LE. Schultes 
sp. nov. 
Suffrutex parvus, in savannarum arena crescens, Cau- 
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