turitate purpureus vel atrorubrus, flavis cum florium 
cinctis. Flores vanilli-fragrantes, valde eis Cyclanthi bi- 
partiti similes sed staminibus multo majoribus. 
Cyclanthus indivisus grows together with the wide- 
spread CL bipartitus Poir., but it is easily distinguished in 
the field by its usually much smaller size, its entire leat- 
blades and its shorter and stouter spadix. The ripened 
spadix in Cyclanthus bipartitus is commonly about eight 
times as long as its diameter; that of C. indivisus in 
length apparently never measures more than five times 
its diameter and may often be shorter. In the former 
species, the spadix is most often entirely whitish yellow ; 
in the latter, it is a beautiful purple-red with yellow 
bands of flowers. 
Cotompra: Comisarias del Amazonas y Vaupés, Rio Apaporis, Sora- 
tama (entre el Rio Pacoa y el Rio Kananari). “Growing out of ground 
directly. Fruiting stalk purple. Outer bract green outside, yellow in- 
side. Inner bract yellow inside, red towards tip. Latex (!) white. On 
floodland.’’ August 20, 1951, Richard Evans Schultes & Isidoro Cabrera 
13680 (Tyee in Herb. Gray). 
ARACEAE 
Anthurium polyschistum P?. 11. Schultes & Idrobo 
sp. NOV. 
Planta epiphytica. Caudex scandens, circiter 0.7 em. 
in diametro, internodiis plusminusve 8 cm. longis. Cata- 
phylla coriacea, 8 cm. longa, persistentia. Petiolus tere- 
tiusculus, leviter sulcatus, apice breviter geniculatus, 
lamina plusminusve aequalis, 20-23 cm. longus. Folia 
membranacea, laete viridis, profundissime 12—15-secta, 
segmentis anguste lanceolato-ensiformibus, apice acumin- 
atis, basi sensim attenuatis, petiolulo brevissimo, ad 20 
cm. longis, 1-2 em. latis, nervo collectivo a margine 1-2 
mim. remoto et nervo centrali siccitate stramineo robusto. 
Pedunculus 25 em. longus vel longior. Spatha albido- 
viridis, elongato-lanceolata, apice acutissima, usque ad 
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