minusve 6 mm. in diametro. Spatha intus rosea, extus 
purpurea, glabra, lanceolata, apice longe acuminata, 10 
em. longa, 1.8 cm. lata, valde contorta. Spadix fusco- 
brunneus vel purpureus, stipitatus (stipite 1.4 em. longa) 
caudiformis, apice subacutus, usque ad 18 cm. longus, 
apicem versus 6 mm. sed basi 1.5 cm. diametriens; tepala 
membranacea, quadrata, 4 mm. longa, 2.5 mm. lata, 
apice valde cucullata, cucullo-triangulare 1.8 mm. lato; 
starninum filamenta membranacea, late linearia, 1.8 mm. 
longa, 1 mm. lata, anthera 0.7 mm. longa, 0.3 mm. lata; 
ovarium ovoideum, albo-crystallinum, circiter 4 mm. 
diarnetriens, stylo sessile ovale, nigro, 0.8 mm. longo 
coronata. 
Cotomspia: Comisaria del Vaupés, Rio Vaupés, Circasia. Sandy sa- 
vannah, Quartzite base. Altitude about 800 feet. November 1951, 
Richard Evans Schultes et Isidoro Cabrera 19674 (Tyrn in Herb. Gray). 
Anthurium infectorium, acommon species of the sandy 
savannahs in the Vaupés, does not appear to be closely 
allied to other species known from the western Amazon. 
The ripened fruits of Anthurium infectorium are em- 
ployed by the Kubeo Indians along the Rio Vaupés to 
paint the teeth purplish or black for dances and cere- 
monies. The specific name enfectoriwm refers to this use 
of the plant as a dye. 
CUCURBITACEAE 
Cayaponia kathematophora R. L. Schultes sp.nov. 
Herba robusta, alte scandens, usque ad tres metr. 
longa. Caulis flexuosus, pseudolignosus, cortice molle, 
viride. Ramuli profunde striato-suleati, omnino dense 
hispidulosi. Petiolus crassiore robustus, densissime albido- 
lanatus, apice non alatus, usque ad 11 em. longus. Folia 
membranacea, supra albo-hispidulo-scabra sed maturitate 
glabrescens, infra densissime molliterque in venis praeci- 
pue lanato-hispidula, trilobata, usque ad 4/5 pro parte 
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