204 ORCHIDS OF THE SIKKIM.HIMALAYA. 
Sikkim, at elevations of 10,000 to 13,000 feet; Hooker and others; on the Sin- 
ga-le-la range and at Tallum Sam-dong in the Lachen valley, at similar elevations, 
Pantling No. 458; in flower during Ju'y and August. Nepal; Wallich. Kamaon; 
Duthie. Also in Eastern Tibet; M. Soulie No. 910, 
The colour of the flowers is dark purple. 
We have retained this plant in the genus Orchis, in spite of its having the 
separate pouch to each gland which is supposed to be characteristic of Ophrys, while 
in Orch/s there is supposed to be only а single pouch for the two glands. In some 
species of Orchis, however, there is no pouch whatever; and in 0. spathulata, Reichb. 
fil., specimens are common in which the pouch is developed, while in others it is so 
rudimentary as to leave the glands practically naked. Тһе character founded on а 
pouch appears thus to be untrustworthy. We prefer, therefore, to give more weight to 
characters derived from structures other than those we would otherwise have relied upon 
and to put this plant into Orchis rather than into Ophrys, because (a) of the presence of 
a well-developed spur equalling the ovary in length [there being no spur whatever in 
typical Ophrys, and only a very short one іп a single species (O. Zabanifere, Willd.), 
which has been referred to that genus]; (0) of the entire absence of calli or other 
appendages on the flat lip (the lip of Ophrys being usually convex with reflexed margins, 
and bearing calli or other processes on its upper surface); (c) of the total absence 
of hairs on all parts of the flower (the petals and lip of many species of Ophrys 
being pubescent); and, finally, because of the absence in the column of this plant of an 
apical process to the clinandrium. The specimen figured on Plate 400 represents a large 
form of the species which is quite common. Growing side by side with it is a dwarf 
form which, except in size, differs little from the larger one. Between the two there 
are numerous gradations. 'To this dwarf form we have given the varietal name лапа, 
and of it we also give a figure. 
Var. nana. Whole plant 2 to 3 in. high; differing from the larger form in its 
much smaller size, in having only a single leaf, in the middle lobe of the lip being 
less deeply lobed, and in the spur being somewhat compressed. Pantling No. 320. 
Prate 402.—Orchis Chusua, Don. Two plants, of natura! size. Fig. 1 a flower, front view, 2 bract, 
ovary, column and lip, seen from the side, 3 the petals, 4 section of spur, 5 apex of ovary and column, 
showing the anther cells with the receptacles of the glands of the pollinia (ғ), the staminodes and the 
stigma (4), 6 pollinia; ай enlarged. 
PLATE 402 bis—Orchis Chusua, Don, var. nana, King and Pantling. Three entire plants, of natural 
sse. Fig.l a flower, front view, 2 side view of ovary, column, spur and lip, 3 petals, 4 section of spur, 
5 column showing the anther, pouched rostellum (r) and stigma (4), 6 pollinia—all enlarged ; 
7 tuber at base of stem; of natural size. 
4, ORCHIS PUBERULA, new species. 
Whole plant not more than six inches high, slender. Leaf solitary, linear, acute, 
not tapered to the base, 2 to 3 in. long and about 12 in. broad. Spike terminal, 
` peduncled, 2- to 3-flowered. Flowers two or three, about *35 in. long; bract lanceolate, 
half as long as the stalked ovary. (82рліз strongly keeled, puberulous externally; all 
(but especially the ovate dorsal one) concave; the lateral pair narrower than the 
dorsal. Petals lanceolate, faleate, sub-acuminate, not united into а hood with the 
