WESTERN TROPICAL AMERICA. 169 
A second species of ‘this genus* has been gathered in Peru by Mathews 
(n. 2040). Init the racemes or branches of the cyme are full as long as in 
M. stipitata, and the flowers still smaller and more crowded. I counted 150 in 
considerably less than an inch, which would give about 2000 to each raceme, or 
above 30,000 in the two cymes of a single specimen or fragment contained in my 
herbarium. Other specimens in Sir W. Hooker's herbarium, from the hot region 
of Mexico (Galeotti n. 331, Linden n. 49), belong either to M. densiflora or to a 
species closely allied to it. In all these there are only female flowers. 
817. Urera, sp.—A single female specimen, allied to V. baccifera, but not in a state to 
determine satisfactorily. It is said to be a tree as stinging as our common nettles.—Tumaco. 
818. Arrocarrus incisa, Linn.—Columbia; not common, and the fruit inferior to that of the 
Society Islands. 
819. Sponta canescens, Decaisne. — Celtis canescens, Humb. et Kunth, Nov. Gen. et Sp. 2. 
p- 28.—Folia proportione latiora, crassiora et brevius acuminata quam in ceeteris speciebus. Florum 
cymz in glomerulos brevissimos contractee.—Isthmus of Darien, 
820. Quercus aristata, Hook. et Arn. Bot. Beech. p, 444.—Tepic. 
821. Quercus elliptica, Née? in Willd. Spec. 4. p. 428.—Sierra Pueblo Nuevo, near Acapulco, 
at the height of 1,500 feet above the sea. 
Patua. 
822. Morenta fragrans, Ruiz et Pay.—Kunth Enum. 3. p. 174. vel species ei affinis.— A 
palm of about forty feet in height, of which there are only portions of leaves and male panicles in 
the collection.—Salango. 
823. Martinezia caryotefolia, Humb. et Kunth.— Kunth. Enum. 3. p. 270.—Isle of 
Gorgona. 
824. Acrocomta sclerocarpa, Mart ?—Kunth? Enum. 3. p. 271.—Bay of Panama.—This is 
certainly an Acrocomia, and, as far as the specimen goes, agrees with Kunth’s character of A. selero- 
carpa, but there is an A. mericana, quoted as figured in Martin’s work, the distinctive characters of 
which, as well as the figures, are unknown to me. ; 
There are also in the collection fragments of two or three other palms not 
determinable. 
AROIDEX. 
825. Pisrra stratiotes, Linn.—Tepic to Guayaquil. 
* M. densiflora, foliis subtus molliter tomentosis, acheeniis subsessilibus. 
; dpe & 
