28 DIDYNAMIA ANGIOSPERMIA. Orobanche. 
Found by Dr, Buchanan in blossom in January in tobac- 
co fields near Calcutta, adhering to the roots of the plants. 
Root fibrous, some portion thereof adhering to the roots of 
Nicotiana Tabacum, Stem ramous, with a scale at the ra- 
mifications only; from six to twelve inches high, round, 
hairy, sometimes coloured, thickness varying from that of a 
goose-quill, to that of the finger ; the lower half branchy, the 
upper half leaning, Flowers numerous, round the upper 
half of the branches, forming dense, sub-clavate spikes, they 
are pretty large, and blue. _ Bractes three-fold, one-flower- . 
ed, hairy. Calyx one-leaved, five-cleft, hairy, open to 
near the base on the inside, where the flower presses on the — 
branch; divisions subulate, half the length of the corol. 
Corol ebplar, villous, the upper lip two- lobed, the podes 9 one 
three. Filaments smooth, except just at the bi a4 
two-lobed, the pairs united by woolly fibres, the lobes end= ~ 
ing ina sharp hornlet. Germ ovate, Style rather longer 
than the filaments. Stigma of two, larger, fleshy Jobes, with 
a perforation between them, Capsule ovate-oblong, two- 
valved, one-celled. | Seeds very numerous, adhering to four 
- longitudinal ridges on the inside of the capsule, a 
& 
2. O. acaulis, Roxb. 
Stemless, Flowers crowded into irregular headas { imme- > 
diately on the roots, Corol five-parted, laciniate ; anthers 
single, each of the inner pair augmented with a large recurv- 
ed oval gland. Stigma peltate, , 
Found growing on the root of the China sugar-cane, in the 
Botanic garden at Calcutta,and in full blossom in September, 
Root, 1 suspect annual; of many thick, firm fibres, ad- . 
hering to the roots of the China sugar-cane. Stem none, 
Flowers numerous, short-peduncled, collected into a large, 
dense, fascicle, even with the surface of the earth, very large; 
colour, a beautiful lively purple. Peduneles short, round, 
smooth, one-flowered; bractes,a triangular, fleshy one, em-— 
bracing the base of ‘one or more peduncles, uniting them: into 
* 
