Siphonia Kunthiana Baillon Etude Gén. Euphorb. 
(1858) 326. 
Venezueta: [Upper Orinoco basin, 1800], Bonpland 5022. 
The type of Stphonia Kunthiana in the Humboldt 
Herbarium in the Musée d’ Histoire Naturelle in Paris 
is sterile, consisting of but three leaflets. The tip of only 
one of the three is preserved, but it shows the calloused 
glandular tip which is characteristic for the species. The 
longest leaflets measure 22-24 cm. long, 7.5-8 em. wide. 
They are elliptic, long-acuminate and very membrana- 
ceous. 
Durcu Guiana: Boschreserve, Sectie O, Boomnummer 41, Novem- 
ber 10, 1916, Forestry Bureau 2368. 
Frencu Gurana: 1857, P. Sagot (pro parte). 
In Paris, there are two sheets marked ‘‘Hb. Sagot 
510” and they represent different concepts. One, labelled 
‘*Maroni, ile portal 1857,’” is undoubtedly Hevea guia- 
nensis; but the other has larger leaflets of a different 
shape, with the glandular-calloused tip and the type of 
scales on the lower surface which are so characteristic of 
HZ. pauciflora. 
I think that we may safely refer this second specimen, 
even though it be sterile, to Hevea pauciflora, and I have 
so annotated it. It bears the annotation ‘‘Hb. Sagot 510. 
Le caoutchouc. Acarouany. (Guyana fraise. 9° 1854, in 
silvis humidis.) P. Sagot.’’ 
This is not the first time the identity of the specimen 
in question has been the subject of discussion. A letter 
from Dr. P. J. S. Cramer, dated March 38, 1913, is at- 
tached to the specimen. It states: ‘This specimen differs 
much from the others which show well the characteristics 
of Hevea guyanensis (obtuse leaf, rounded buds). The 
leaflets approach most closely Hevea brasiliensis... It 
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