98 CXLVIII. ORCHIDE/E. (J. D. Hooker.) \Cystorchis. 



raceme 4-6 in., glandular-pubescent; flowers about i in. long; lateral sepals very 

 gibbous at the base. Named by Mr. Ridley. The flowers in the specimen he has 

 kindly sent are far too young for analysis. 



83. HERPYS1KA, Lindl 



A terrestrial leafy herb ; stem stout, erect. Leaves ovate-lanceolate, 

 petioled, membranous ; sheaths very large, hyaline. Flowers in a dense 

 short sessile spike. Sepals subequal free; dorsal forming a hood with 

 the oblong petals. Lip adnate to the sides of the column, spreading, 

 spur elongate, straight, exposed, tip 2-tid. Column short, not appendaged 

 in front; stigma anticous ; rostellum short, erect, 2-fid ; anther sessile, erect, 

 linear-oblong, 2-celled; pollmia narrow, tipped with 2 hard lanceolate 

 appendages or glands, pollen grains flattened. 



K. longicaulis, Lindl. in Watt. Cat. 7389; in Bot. Reg. under 

 t. 1618 ; Gen. & Sp. Orchid. 506 ; in Journ. Linn. Soc. i. 178, 190. 



EASTERN HIMALAYA; Nepal, Wallich* Sikkim, alt. 3-4000 ft., J. D. H., &c. 

 KHASIA MTS., alt. 4500 ft., Clarice. 



Stem 6-12 in., elongate and creeping below, then ascending, as thick as a swan's 

 quill or less, clothed below with the white, truncate leaf sheaths -|-1 in long. 

 Leaves 2-3 in., membranous, shortly petioled. Spike 1-2 in., pubescent; bracts 

 TJ- f in., ovate-lanceolate; flowers with ovary rather longer, suberect, pale pink; 

 sepals in. long, 5-nerved, and shorter petals- obtuse; lip shorter than the sepals, 

 subpauduriform, reflexed from the middle, strongly 5-nerved, disk with 2 flattish 

 calli about the middle, and a thick lamella extending to the rounded tip ; spur 

 longer than the blade, strongly nerved ; base of white column contracted below the 

 broad pulvinate stigma. I do not find the two lamella in the spur, which is longitu- 

 dinally grooved or infolded at the back. 



84. ODONTOCHILUS; Blume. 



Habit and character of Ancectocliilus, but sac or small spur of the lip 

 hidden between the more or less connate bases of the lateral sepals. 

 Species about 12, Indian, Malayan and Pacific. 



The pollen varies greatly in structure in this genus. The species are most difficult 

 of analysis and definition from dried specimens. Myrmechis, Blume, is only 

 distinguishable by the fewer often erect flowers and stem with numerous small 

 leaves. 



* Stem stout, leafy. Flowers solitary or very few. (MYRMECHIS, Bl.} 



1. O. ma cr an thus, Hook. f. Ic. PL ined. ; leaves ovate acumi- 

 nate, flowers very large solitary erect, claw of lip entire, margins involute, 

 limb small orbicular. 



, Scortecfiini ; on Maxwell's Hill, Wray. 

 Stem 2-3 in., from a nodose procumbent base. Leaves f in., shortly petioled. 

 Flower white, nearly 1 in. long, with a sheathing bract on the very short peduncle ; 

 sepals erect, lateral linear-oblong from a gibbous base, 1-nerved; dorsal ovate-lan- 

 ceolate, loug-acuminate ; petals falcately dimidiate-ovate, long-pointed ; sac of lip 

 subglobose, enclosed calli small ; limb shortly exserted ; column very short, frontal 

 appendage erect lanceolate; rostellar arms very long, slender ; anther linear-lanceo- 

 late; pollinia clavate, united caudicles long slender, gland elongate. Resembles 

 Myrmechis glalra, Blume of Java, but the narrower flowers, long anther, pollen and 

 rostellar arms at once distinguish it. 



