Summary of characters of Hevea microphylla 
guianensis 
Hevea microphylla 
H. nitida 
H. pauciflora 
H. rigidifolia 
» |H. Spruceana 
H, 
* 1H.Benthamiana 
*_]H. brasiliensis 
Ecological site periodically flooded 
i) 
Tree, small to medium 
mo | 
tal 
val 
Trunk basally swollen 
Trunk tapers abruptly to slender column, 
usually flexibly bent x 
Crown sparse x x = 
Bark of young flushes bright red x 
Leafy shoots alternating with narrow rings of 
bud scale sears i 
Leaflets usually reclinate, sometimes horizontal- 
reclinate x x x > 
Pistillate flowers large x oe 3 
Pistillate flowers with swollen torus 
Pistillate disk conspicuous, lacerated xx 5 
Staminate flowers large x = 
Staminate buds acute or acuminate, not 
truncate or obtuse x x x 
Ovary glabrous or nearly so | a ae 
Staminate disk conspicuous x . x-= 
Anthers 10, irregularly or subregularly 
biverticillate x oe: 
Valves of capsule coriaceous 
Dehiscence slow, not explosive 
Fruit ripens yellow 
Tip of fruit, when ripe, with red hue xs <= 
Capsule conic-pyramidal, pointed 
Seeds triangular-ovate in longitudinal section 
') Some variants of H. brasiliensis are not basally swollen, and those 
growing above flood-level are rarely, if ever, swollen. 
”) Not all variants of H. Benthamiana are of this structure. 
®) Some variants of H. pauciflora are large trees with dense and heavy 
crowns. 
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