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1 ) Hevea bras Aliens is Hue 11. Arg. in Linnaea 34:204© 1865 
Jour» 
Syn® Not. : Siphon la Ridleyana Gook in^ Washington Acado Sc® 31:46-65 
1941. 
Z) Hevea guianensis Aubl© Hist* Plant* Guian. 2:871, PI* 335 (sphalm©:p eruviana 
)® 1775, 
Syn® Nov© : Oaoutohoua guianensls ( Aubl© ) Cook in Jour. Washington 
Acado Sc© 31:58© 1941, 
3) 
Hevea jane irons is Muell© Arg® in Marti us ? Flo Brasil© 11[2]:706© 1874© 
Sync Nov. : Siphonia .janeirensi s( Muell. Arg. ) Cook in Jour© 
Washington Acad© Sc. 31:61© 1941. 
I hope that the se4 synonymi es conform. with Cook f s 
-mmmeBem treatment of Hevea 0 Siphonia and Caoutchoua© I restricts then to the 
harest essentials because I do not intend at this writing to enter into the 
merits of the clasfsif icfati on_of Heve a © It is clear in my understanding that 
"tr ea tmehV'^"^- 
much is to be done in t of the Euphorbiaceae in general 
before we can have this classification put on a tolerable basis. Here I merely 
deal with six labels of which three are correct on technical grounds of nomen- 
while three others are manifestly erroneous on the same grounds© Placing the 
synonyms where they belong is quite a different wtowmfr'than deciding which 
are the characters,for instance s that may or may not separate specifically 
1 uf-.An ri 
Heve a brasiliensls from H© janelr ensis © To thi 
7 ) 
wilistend later© 
