Janeiro 5 (1930) 156 and in Bol. Téen. Instit. Agron. 
Norte no. 10 (1946) 20, 28), as asynonym of HI. Spruce- 
ana. 'The fact that Hevea discolor has page priority over 
HZ. Spruceanais of no significance, since Ducke, in 1930, 
first combined them under the latter binomial. Thus, 
this name, which has caused so much confusion and un- 
certainty, henceforth need not be a source of worry to 
students of the genus of the Para rubber tree. 
[ 254 ] 
