CC. Leaflets ordinarily reclinate,occasionally approaching a semi- 
horizontal position. Inflorescence subglabrous. Seeds more 
than 450 per kilo. 
E. Erect trees 30-100 feet tall. Trunk thick, cylindrical. 
Leaflets semi-horizontal to strongly reclinate, usually 
more or less flat, subcoriaceous. Seeds 450-500 per 
kilo. Bark clear brown or reddish brown, smooth. 
Habitat: bogs or well watered rocky slopes. 
H. viridis 
EE. Erect or semi-prostrate treelets or bushes 8-15 feet tall 
(rarely up to 25 feet). Trunk slender, weak, often 
gnarled. Leaflets strongly reclinate, folded at right 
angles along midrib, firmly coriaceous. Seeds very 
small, probably 650-750 per kilo. Bark checkered, 
roughish, brownish or light gray. Habitat: dry sterile 
sandstone mesas. 
H. viridis var. toxicodendroides 
BB. Capsules (ordinarily 5 cm. or more in diameter) and seeds 
large. Seeds about 200 per kilo. Disk of staminate flower 
non-existent or very slightly developed. Inflorescence densely 
pubescent or rarely subglabrescent. Leaflets ordinarily some- 
what membranaceous-papyraceous, reclinate. 
H. brasiliensis var. subconcolor 
AA. Leaflets strongly erect, in relation to the petiole. Latex nor- 
mally yellowish. Habitat: forests not subject to long periods of 
annual flooding, headwaters of creeks. 
F. Latex usually deep yellow, often orange-yellow. 
Staminate buds obtuse or short-acuminate. Inflores- 
cence usually pubescent. Anthers 5 (often 4-6) in 
one regular verticel. Seeds 500 per kilo. 
H. guianensis 
FF. Latex usually cream-color to yellow. Staminate buds 
very strongly acuminate. Inflorescence pubescent or 
subglabrous. Anthers 5 (rarely 6-8) in one irregular 
or in two irregular or regular verticels. Seeds 500 
per kilo. 
H. guianensis var. lutea 
[17] 
