576 
Materiaes para a Flora Amazonica 
bus, internodiis 12—18 cm longis. Folia longiuscule 
petiolata petiolo 5—6 cm longo griseo adpresse ves- 
tito apice biglanduloso. Lamina magna (10—13X(8—10 
cm) late ovata (interdum suborbicularis), basi cor- 
data, sinu aperto sed angulum distinctum formante, 
5-—7-nervis apice plus minus contracta acutissimegue 
acuminata supra glabra fuscescens infra densissime 
adpresse vestita sicca argenteo-nitens vel plus minus 
sordide albida. Umbellae circiter 10--12-florae saepe 
ramulos axillares usque triplo dichotomos terminan- 
tes, pedunculi adpresse sordide albo vel fulvo-vestiti 
communes 4 cm longi 2 mm et ultra crassi, partia- 
les 2,5—3 cm longi graciliores. Pedicelli alabastrorum 
florumque breves, fructiferi accrescentes et plus mi- 
nus. 1 cm attingentes parte inferiore bracteolis mi- 
nutis instructi. Flores 12—15 mm diametro aequan- 
tes sepalis ovato-acutiusculis extus adpresse pilosis, 
petalis luteis et rubris limbo suborbiculari denticu- 
lato. Stamina crassiora aequilonga vel anticum lon- 
gius, antherae glaberrimae. Ovarium dense pilosum. 
Styli antici appendix foliosus late transversus apice 
linea recta truncatus haud emarginatus. Samara ad- 
presse hirsutula cristis lateralibus plus minus undu- 
latis vel lobatis: ala dorsalis circa 3 cm longa basin 
versus 8-—Q mm lata, triente superiore dilatata 
11—13 mm lata, margine superiore leviter incrassa- 
ta plus minus rectilinea, basi vix appendiculata, api- 
ce obtusa, arcuato-venosa. 
Differt a S. fulgens (Lam.) Juss. cui maxime 
affinis videtur: foliis ovatis, styli antici appendice 
haud emarginato, samarae margine superiore basi 
vix appendiculato. 
Pampa del Sacramento, margem da quebrada 
Chingana, 25 XI 1898. 
Euphorbiacez. 
Caperonia castaneaefolia St. Hil. (1496). 
No igarapé de Sarayacu. 23 XI 1898. 
