61 



59. D. denudans (Don. Prodr. 34. Wall. Cat. no. 2014. 

 L. no. 42) ; caulibus brevibus caispitosis erectis vaginis 

 laxis foliorum vestitis, foliis oblongo-lanceolatis submem- 

 branaceis apice obliquis emarginatis, racemis lateralibus 

 terminal! busque nutantibus multifloris, sepalis acumi- 

 natis : lateralibus basi incurvis, petalis minoribus, labelli 

 trilobioblongi lobo medio acuminate crispo lateralibus ser- 



ratis, disco bilaraellato. Nepal. Flowers greenish 



white. Lip green, whole-coloured. This species is the 

 most variable that I know in point of size. Some of 

 Dr. Wallich's specimens are not more than an inch and 

 half high, with two or three leaves and as many flowers 

 on each individual, while others are six or seven inches 

 high, with numerous distichous leaves, and three or four 

 long nodding racemes, each consisting of eight or nine 

 flow^ers. The species is always distinguishable by the 

 loose membranous sheaths which clothe the stem when 

 the leaves have fallen off. 



60. D. alpestre (Royle Illustr. t. 88. fig. 2) ; caulibus bre- 

 vissimis ovatis 3-4-phyllis, foliis lineari-oblongis, racemis 

 8-5-floris erectis, sepalis acuminatis cornu brevi obtuso, 

 petalis minoribus, labelli trilobi lanceolati lobo medio 

 acuminato crispo basi angustato lateralibus laceris, disco 



bilamellato Himalayas. Stems and leaves only a 



few inches high. Flowers white, with a purplish lip. 



61. D. cuspidatum (Lindl. no. 43); caulibus brevibus erectis 

 o-5-phyllis, foliis lineari-oblongis apice obliquis emar- 

 ginatis, racemis terminalibus 3-4-floris foliis brevioribus, 

 bracteis lineari-ovatis acutis, petalis sepalisque lineari- 

 lanceolatis acuminatis sequalibus : horum lateralibus basi 

 incurvis cornu referentibus, labelli trilobi petalis duplo 

 brevioris lobis lateralibus maximis erectis rotundatis in- 



tegerrimis : intermedio ovato acuminato. Tavoy. 



This resembles in many respects D. denudans, from 

 •which it is abundantly distinguished by the loose sheaths 

 of the fallen leaves not covering, the stem, and by the 

 peculiar form of the lip. My specimens are from three 

 to four inches high. The flowers appear to be white. 



62. D. microbolbon (Ach. Richard. Ann. Sc. n. s. 15. t. 8) ; 

 caulibus parvis ovatis aggregatis diphyllis, foliis oblongo- 

 linearibus submerabranaceis acutis, scapo gracili foliis 

 longiori apice trifloro, racemo trifloro, petalis linearibus 



