Urospatha somnolenta PR. LH. Schultes sp. nov. 
Herba paludosa saxicola, usque ad 2.5-8 pedes alta. 
Rhizoma spongiosum. Folia erecta, papyracea, hastato- 
sagittata, latiloba, supra atroviridia, infra vix pallidiora, 
utringue glabra, nervis utrinque prominentibus; lobo 
antico lanceoloto-triangulari, apice acuminato, usque ad 
25 cm. longo, parte inferna 10 cm. lato; lobis lateralibus 
paullo longioribus, oblongo-lanceolatis, sinu profunde 
parabolico distantibus, costis posticis in sinu 2 cm. denu- 
datis, nervis lateralibus primariis lobi antici duo superi- 
oribus angulo acuto adscendentibus in apice exeuntibus, 
infimo juxta margine fere totius lobi procurrente, nervis 
loborum lateralium superioribus adscendentibus margi- 
nem versus conjunctis. Petiolus apicem versus callosus, 
parte callosa geniculata, plusminusve 8 cm. longa, usque 
ad 85-90 cm. longus, aliquid turgido-carnosus, atroviridis 
et conspicue purpureo-maculatus. Pedunculus robustior, 
turgido-carnosus, colore petiolo similis, usque ad 55-60 
em. longus, basi 1 em. in diametro. Spatha anguste lan- 
ceolata, longe acuminata, statu juvenili valde spiraliter 
contorta adulta apicem versus contorta, extus atropur- 
purea vel nigro-purpurea, intus atroviridis, 15-18 cm. 
longa, basi 8 cm. lata. Spadix purpureus, apparenter 
non stipitatus, usque ad 5-6 cm. longus, 8-3.5 cm. in 
diametro, maturitate valde reflexus. Flores usualiter 
quinque-tepali, purpurei. Ovarium obovoideum, vulgo 
biloculare. Bacca obovoidea, 6-7 mm. longo, 4.5 mm. 
crassa. Semina subreniformia, laeviter rufo-punctulata. 
Urospatha somnolenta resembles U. sagittifolia (Ro- 
dach.) Schott, U. Spruceana Schott and U. decipiens 
Schott, both of which occur in the northwest Amazon. 
Urospatha somnolenta appears to be amore robust plant 
than is generally reported for U. sagittifolia and its vari- 
eties. It is rather outstanding in its choice of habitat — 
sandy and boggy holes and crevasses in rocks in the vicin- 
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