synonym, relying, no doubt, on the similarity of the 
spines. 
ii the following year, 1697, Commelin, ** Hortus Medi- 
cus Amstelodamensis” (vol. i. p. 209, t. 207), figures an 
Arbor cornigera, and describes it as having a globose head 
of flowers (as in A. sphexrocephala) giving as the habitat 
Cuba and Mexico. He does not figure the flowers, but as 
he cites Breyn’s “ Prodomus Historiz Plantarum Rario- 
rum” (1680), in which the globose heads are mentioned, | 
he may have borrowed this particular from Breyn. Re- 
ferring to the latter work, I find a good description of his 
plant, flower, fruit, and seed, with a citation of Hernandez 
Arbor cornigera ; but he adds that Hermann had stated, 
on the authority of an English nobleman versed in Her-— 
baria, that his (Breyn’s) plant was not that of Hernandez; _ 
from which it may be surmised that the English nobleman, — 
knowing the Hampton Court plant, regarded it, and not— 
Breyn’s, as that of Hernandez. This would further render 
it probable that the Hampton Court plant was, if either, 
A, spadicigera. F 
In 1734 Seba, in his “ Thesaurus” (i. p. 218, t. 70, fe” 
13) figures spines and leaves of an Acacia cornuta, and 
cites Recchus (the compiler of the Botanical chapters 
Hernandez) for it; giving also Hernandez’ native name, 
Hoitzmamaxatl, together with his description of the ants; 
&e. The figure answers to either species. He says 1b 
was sent to him by a friend in the East Indies, no doubt 
an error. : 
Linneus, in the “ Hortus Cliffortianus ” (1737, p. 908), 
under Mimosa aculeis alarum geminatis, cites for it Her- 
nandez, Plukenet, Breyn, and Commelin, with Mexico a0 
Cuba as habitats, but unaccountably overlooks the de 
scription of the flowers given by the two last named authors. 
In 1753 the twins were in the Species Plantarum, included 
under Mimosa cornigera; all previous authorities, except 
ne being cited for it. ; | 
n 1763 Jacquin (* ist.”? p. 260) 
ficutind ie an Select. Stirp. Amer. Hist.” p Z 
spikes of yellow inod 
while overlooking his 
now, in *‘ Species 
first to refer Mim 
rnigera, Linn., as having cylindric 
orous flowers; and cites Commelin, 
description of globose heads. Willde-_ 
Plantarum ” (iv. 1080) was, I think, the ; 
osa cornigera, Linn. to Acacia, describipg » 
