is, at present, not well known. Consequently, although 
evidence tends to lead one to believe that ‘‘caffrorum’’ 
and ‘‘Durra’’ are not the oldest varietal names for these 
forms, it has seemed advisable to retain them until a 
more complete study of the species has been made. 
Talinum paniculatum (Jacg.) Gaertn. forma 
variegatum (Hort. apud W. Mill.) Hubbard & Rehder, 
comb, nov. 
Talinum patens Willd. var. variegatwm Hort. apud 
W. Miller in L. H. Bailey, Cycl. Am. Hort. 4 
(1902) 1767. 
The combination for this horticultural form does 
not appear to have been made previously under 7°. pani- 
culatum. 
Tipuana tipu ( Benth.) Hubbard & Rehder, comb. 
nov. 
Machaerium Tipu Bentham in Hook Journ. Bot. & 
Kew Gard. Mise. 5 (1853) 267. 
Tipuana Tipa Lillo, Contrib. Conoe. Arbol. 
Argent. (1910) 58. 
Lillo in transferring this species to T’puwana elected 
to use the other and possibly more correct spelling of 
the vernacular name. In consequence the adoption of 
Bentham’s earlier specific name necessitates a new com- 
bination. 
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