98 ORCHIDS OF THE SIKKIM-HIMALAYA. 
а minute ‘straight. pouch, scarcely amounting to a spur; whereas in Tipudaria the spur is much longer 
than the ovary and much curved; the lip is also different in the two. 
The genus is dedicated to its original collector, Dr. D. D. Cunningham, F.R.S., C.I.E., and the 
consonants in the name proposed for it are derived from his initials. 
DipicreaA ОохміхонАмІ, King and Prain in Journ, As. Soc. Bengal, Vol. LXV, 
pt. 2 (1895), p. 119. 
Terrestrial, with a small pseudo-bulb bearing from its side a single leaf and from 
its summit an inflorescence 5 to 9 in. long, about one-third of which is spike. Leaf 
broadly ovate, 3-nerved, sub-acute, the edges undulate, slightly narrowed at the base 
to the narrow channelled petiole; length 1:5 in., breadth °85 in.; petiole 5 in., 
slightly expanded at the base. Peduncle with two or three distinct blunt convolute 
sheaths; spike 1 to 15 in. long, laxly-flowered, elongating in fruit. Flowers “1 in. 
long; floral bract minute, triangular, shorter than the pedicel of the ovary. Sepals 
and petals sub-equal, narrowly oblong, blunt; spur of the lip very short, pointed. 
Sikkim; in the Lachen Valley; the exact elevation unknown, but probably about 
12,000 feet; in flower in July. Cunningham (without note of locality or elevation); 
Pantling “Хо. 396. | | 
This was originally collected by Dr. D. D. Cunningham, F.R.S., C.LE, in the 
Sikkim-Himalaya in 1889. 1% has more recontly been brought in by the collectors 
of the Botanic Garden, Calcutta. 
Рглте 50.—Didiciea Cunninghami, King and Prain. А plant, of natural size, Fig. 1 a flower 
Front view, 2, bract, stalked ovary, column and z side view, 3 lip, 4 column and anther, front view, 
5 anther, 6 т; ail MM 
b. Dendrobium, Bonis, 
Epiphytal; pseudo-bulbs short aud fleshy or elongated and stem-like, tufted except in 
Section Sarcopodium. Leaves never plicate, sessile (except in Sarcopodium) with sheathing | 
bases, Flowers solitary, or in fascicles or racemes, often large. Sepals subequal, the 
lateral pair obliquely adnate to the foot of the column and forming with it a sac or 
mentum. Lip sessile or clawed at the base, adnate to and incumbent on the foot of 
the column; side lobes embracing the column, or spreading, or absent; the terminal 
lobe broad or narrow, flat, convex, concave, or saccate; the disc sometimes lamellate. 
Column short, its foot long or short, with usually a nectar-secreting depression or cavity 
at its extremity, the apex angled or 2-toothed, anther 2-celled.  Pollinia 4, equal in 
length, sometimes in free pairs but usually all slightly coherent, the 4 never all quite 
free, ovoid or oblong, slightly compressed. 
In the following account of this difficult genus we have adopted the sections into which Sir 
Joseph Hooker divides it in the “Flora of British India,” although we do not place them in the 
same sequence, the sections Cadetia and Sarcopodium being placed near Bulbophyllum ав being 
forms connecting typical Dendrobium with that genus. We place Aporum at the beginning as having 
flowers more resembling those of .Liparis than any others of the genus described in these pages. 
The true relationship of Stachyobium is with Eria; but, as it is impossible to place it near that 
genus, we have put it after sect. Virgate. Four species of Dendrobium mentioned in the “Flora 
of British India” as natives of Sikkim are not now found there, having probably disappeared, 
