Diplomeris."] CXLVIII. ORCHIDE^E. (J. D. Hooker.) 167 



Flowers large. Sepals subequal, free, lanceolate, spreading. .Petals longer 

 and broader. Lip sessile at the base of the column, spreading, very broad, 

 entire, spurred. Column very short; rostellum broadly dilated, mem- 

 branous, beneath which is a broad oblong lamina from the column ; anther- 

 ceils thick, parallel, tubes very long incurved ascending ; caudicles of 

 pollinia very long slender, glands small naked; stigmatic processes 0; 

 rosbellum prominent between the anther-cells. 



1. D. pulchella, Don Prodr. 26 (excl. hab.) ; glabrous, leaves ensi- 

 form, lip broadly obcordate. Lindl. Gen. & Sp. Orchid. 330 ; in Journ. 

 Linn. Soc. iii. 44. Diplochilos longifolium, Lindl. in Wall. Cat. 7064; in 

 Sot. Reg. under 1. 1499. Orchis uniflora, Eoxb. Fl. Ind. iii. 452 ; Griff. 

 Notul. iii. 368. Habenaria uniflora, Griff. Ic. Plant. Asiat. t. 338, f. 2. 

 Paragnathis pulchella, Spreng. Syst. Veg. iii. 694. 



KHASIA HILLS, alt. 4-5000 ft., Roxburgh, WallicJi, &c. 



Rootstock creeping, stibtuberous and fibrous ; stem short. Leaves usually 2, 

 erect, 3-4 by i-^- in., acute. Scape about equalling the leaves, naked, 1-fld. ; 

 bract cyrnbiform, green, acuminate ; flower 1-1| in. diam., white ; sepals ovate- 

 lanceolate, acute ; petals much larger, broadly obovate rounded or ovate-oblong ; 

 lip -| in. diam., sinus cuspidate ; spur 1^ in., incurved or upcurved, thickened beyond 

 the middle, tip acute. Don gives " Nepal, Wallich," as the habitat, but Wallich's 

 specimens are from the Silhet Mts. (Khasia hills). Don's generic description is unintel- 

 ligible, and he erroneously describes the flowers as rose purple. 



2. D. hirsuta, Lindl. Gen. & Sp. Orchid. 331 ; hirsute, leaf oblong, 

 lip cuneately orbicular. Diplochilos hirsutum, Lindl. in Wall. Cat. 7065 ; 

 in Sot. Reg. under t. 1499. 



TROPICAL HIMALAYA; Nepal, Wallich; Western Bhotan, alt. 1500 ft., Gammie. 



Tubers globose. Leaf 2-2% in., radical, with sometimes a small second. Scape 

 1-1 in. ; flowers 1| in. diarn. ; bract oblong, sheathing ; sepals 5-nerved, ovate- 

 oblong, subacute ; petals very much larger, orbicular ; lip^with a short slender claw, 

 apex retuse or rounded, apiculate or not ; spur 1^ hi., very slender, incurved and 

 ascending. 



108. HElMHPXZiXA, Lindl. 



Terrestrial 1-leaved tuberous herbs. Leaf radical, broad, flowers 

 laxly racemose. Sepals equal in length, lateral spreading. Petals broadly 

 ovate, entire. Lip continuous with the column, broad, obscurely 3-lobed, 

 spreading; spur trumpet-shaped. Column very short; rostellum broad 

 projecting from between the anther cells, complicate ; stigmatic processes 

 ; anther-cells subdivergent, tips produced into grooves of the rostellum ; 

 pollinia 2, caudicles long, glands distant exposed. 



1. H. cordifolia, Lindl. Gen. & Sp. Orchid. 296; leaf ovate-cordate, 

 lip obovate-oblong, spur longer than the sepals. Platanthera cordifolia 

 Lindl. in Wall. Cat. 7049 ; Gen. & Sp. Orchid. 296. 



WESTERN TEMPEEATE HIMALAYA j alt. 4-500-7000 ft., from Nepal, Wallich, to 

 Simla, Gamble. 



Tubers oblong. Leaf 2-1 in., ainplexicaul, acute, many-nerved. Scape with few or 

 many-fld. racemes, 4-10 in. ; bracts shorter than the ovary ; flowers ~| in. diam. ; 

 dorsal sepal oblong obtuse, lateral falcately oblong ; petals subacute ; lip with low- 

 rounded side lobes and a broad subcrenate midlobe, spur recurved j anther sessile, 

 cells nearly parallel, pollinia clavate, caudicles short, glands rather distant. 



2. H. calophylla, Par. & Beichb.f, in Journ. Sot. xii. (1874) 197; 



