manifesto. Capsula subglobosa, ovoidea vel ellipsoidea (nun- 
quam pyramidalis), transversaliter trigastra vel circularis, 
ecarinata, apice rotundata vel parum mucronata, eruptione 
dehiscens, semina ab arbore distante propullulans. Valvae 
crassae, pericarpio plus minusve carnoso atque epicarpio 
grosso, denso, lignoso, siccitate non convolutae, usualiter non 
perdurantes. 
The following species and varieties, as the genus is now 
understood, belong to this subgenus. 
Hevea Benthaminana Mueller Argoviensis in Linnaea 34 
(1865) 204. 
Hevea brasiliensis (Willd. ex A. Juss.) Mueller Argoviensis 
loc. cit. 204. 
Hevea camporum Ducke in Arch. Jard. Bot. Rio Jan. 4 (1925) 
111. 
Hevea guianensis Aublet loc. cit. 871. 
Hevea guianensis Aublet var. lutea (Spr. ex Benth.) Ducke et 
R.E.Schultes in Caldasia 3 (1945) 249. 
Hevea guianensis Aublet var. marginata (Ducke) Ducke loc. 
cit. 6 (1933) SI. 
Hevea nitida Martius ex Mueller Argoviensis in Martius FI. 
Bras. 11, pt. 2 (1874) 301. 
Hevea nitida Martius ex Mueller Argoviensis var. toxico- 
dendroides R.E Schultes et Vinton) R.E. Schultes in Bot. 
Mus. Leafl., Harvard Univ. 13 (1947) 11. 
Hevea pauciflora (Spr. ex Benth.) Mueller Argoviensis in 
Linnaea 34 (1865) 203. 
Hevea pauciflora (Spr. ex Benth.) Mueller Argoviensis var. 
coriacea (Ducke) Ducke in Arch. Inst. Biol. Veg. Rio Jan. 
ZXtos3) 200. 
Hevea rigidifolia (Spr. ex Benth.) Mueller Argoviensis loc. 
cit. 203. 
Hevea Spruceana (Benth.) Mueller Argoviensis loc. cit. 204. 
Subgenus Microphyllae R. E. Schultes subgen. nov. 
Typus: Hevea microphylla Ule 
Flos pistillatus toro manifeste incrassato capsulae maturae 
ad basim persistente, conspicuoque. Capsula pyramidalis, 
transversaliter triangularis, conspicue carinata, apice longe 
oe 
