310 ORCHIDS OF THE SIKKIM-HIMALAYA. 
in Wall. Cat. 7042. ^ Zabeaaría, Griff. Notul. III, 406; Itin. Notes 31, No. 495; Ic. Pl, 
Asiat., t. 340. ) 
Sikkim, at elevations of from 2,500 to 5,000 feet, common ; Pantling No. 97. 
Westward to Nepal. Also in the Khasia and Naga Hills, and in Burma. 
The flowers of .this are white and the. bracts green. The pollinia, as has been 
above indicated, are composed of two thin flat granular plates (of pollen masses) so 
closely adherent to each other that it is impossible to detach the one plate from the 
other. Krintzlin (Engl. Bot. Jahrb. XVI, 199) reduces to this Platanthera dentata, 
Lindl. Gen. and Spec. Orch., 296. (Orchis deatata, Swartz Act. Holm. 1800, p. 207; 
Willd. Sp. Pl, Vol. IV, 42.) 
Mr. Pantling, who has collected this species very largely, finds that a form of it 
with spurless flowers is very common (see Figs 4 and 5 of the plate) The flowers 
of this form have moreover an entire lanceolate lip, as though the side lobes on a : 
lip of the usual form had been removed. The two stigmas in this variety are also 
united, whereas in the normal flower they are separated by the. area in the centre of 
which lies the orifice of the spur. Except for these differences the plant in every way 
resembles the typical form. 
Var. ECALCARATA. Spurless; stigmas united; lip lanceolate-oblong. 
22 PrarE 405.—Habenaria geniculata, Don. Parts of a plant, of natural sise. Fig. 1, column showing 
the pollen chambers and their staminodes, rostellum, stigmas (s) and mouth of the spur, 2 section of 
spur, 3 pollinia, 4 flower of var. eculcaratu, showing the oblong, lanceolate lip (/), and united stigmas (s), 
б floral bract, ovary and remains of the flower of the spurless variety ; all enlarged. 
3. HABENARIA PECTINATA, Don Prod. Fl. Nep., 24. 
Whole plant 12 to 30 in.; lower part of stem stout and bearing long tubular clasping 
sheaths with acute apices. Leaves distributed in the upper part of the stem, sessile, 
linear-lanceolate, acuminate, strongly 3-nerved, the bases broad and sheathing or 
stem-clasping; length 4 to 7 in., breadth at the middle ‘5 to "8 in.; those nearest to the 
raceme much smaller. Raceme З to 6 in. long. Flowers 1°25 to 1: 5 in. in diam. ; floral 
bract linear-lanceolate, longer than the sub-sessile ovary. Sepals unequal; the dorsal 
lanceolate, erect, the lateral pair rather wider, sub-falcate, acute, erect, with recurved 
apices. Petals forming a hood with the dorsal sepal, narrowly oblong, falcate, acute or 
obtuse, the outer margins shortly ciliolate. Zip as long as the sepals, deeply 3-lobed ; 
the middle lobe linear; the side-lobes rather longer, deeply pectinate on the outer 
margin; spur laterally compressed, rather longer than the ovary, sigmoid or geniculate, 
dilated at the apex. Anther-cells divergent, their lobes very long; pollinia. narrowly 
clliptic, grooved, their caudicles as long as themselves, slender, curved, the glands 
discoid, minute. Stigmas linear, divergent, situated on the sides of two thin. elongate 
distant sub-horizontal processes. Capsule almost sessile, fusiform, thickly ribbed. Wall. 
Cat, 7029 A. and B. in part; Lindl. Gen. and Spec. Orch., 321; Hook. fil. Fl. 
Br. Ind. VI, 137. Н. pectinata and Н. arietina, Hook. fil, Krüntzlin in Engl. Bot. Jahrb. 
XVI, 193. Jf. Gerardiana, Wall, Cat, 7031. H. ensifolia, Lindl. in Wall. Cat. 7030; 
Lindl. Gen. and Spec. Orch., 321. Orchis pectinata, Smith Exot. Bot., t. 99.  - 
The dorsal -— M | petals are — the lateral LI dark green, and 
the lip white. 
