BOTANICAL MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
CamBRIDGE, Massacnusetrs, AprRIL 18, 1940 Vou. 8, No. 5 
SOME NOMENCLATORIAL PROBLEMS 
IN ACACIA 
BY 
ALBERT F. HILu 
DvrinG THE course of investigations dealing with 
gums and gum-bearing plants it has become increasingly 
evident that several of the species involved bear scientific 
names which cannot be maintained under the Interna- 
tional Rules of Nomenclature. It seems desirable in the 
present paper to summarize the nomenclatorial history of 
these species and to indicate their correct names. A more 
complete synonymy of these, and other species as well, 
will be given in a later paper. 
AcACIA EHRENBERGIANA Hayne 
(A. flava (Forsk.) Schweinfurth) 
In 1827, Hayne described Acacia Khrenbergiana and 
for many years this name was in use for the plant con- 
cerned. In 1896, however, Schweinfurth pointed out that 
Mimosa flava Forskal (1775) was in reality this species, 
and, following the priority rule, he adopted Acacia flava 
(Forsk.) Schweinfurth as the correct name. Many au- 
thorities have followed this latter course. 
Schweinfurth’s name, however, cannot be maintained 
under the Rules, as it is a later homonym of Acacia 
flava Sprengel ex DeCandolle, and Hayne’s name must 
be reinstated. 
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