NAT. ORDER. 
AracecB. 
ARUM TRILOBATUM. THREE LOBED ARUM. 
Class XX. Gynandria. Order III. Hexandria. 
Gen. Char. Spathe, one leafed, cowled. Spadix, naked above ; 
female below. Stamens, in the middle. 
Bpe. Char. Leaves, hastate, quite entire. Spadix, club-shaped. 
The Arum trilohatum which our figure represents, is an exotic 
plant, and by most writers said to be a native of Amboyna and 
Ceylon. The root in appearance very much resembles the arum 
triphyllum, and is extremely acrid : the plant is the smallest of the 
tribe, and particularly distinguished by the rich brown, velvety 
appearance of its flowers ; the length of its tapering spadix, espe- 
cially on its lower part, is full of small cavities, and resembles in 
appearance a piece of metal corroded by long exposure ; and by 
the insupportable smell which the whole of the flower, but more 
especially the spadix, sends forth. 
Mr. Miller, in his figure of this plant, to which Linnaeus 
refers, has been more happy in his representation, than in that of 
many others. Rumphius' figure and description accord with our 
plant, although some of his leaves are more perfectly three-lobed 
than any we have seen here on the living plant, and to this varia- 
tion he informs us they are subject. We learn from Miller and 
others, that this singular plant was first brought into notice in the 
year 1752, and was discovered growing wild in the neighborhood 
of Ceylon. It flowers in May and June, and is regarded by most 
botanists as a hot-house plant ; we have seen it succeed very well 
