- 13 - 



bifariae, triangulae, marginibus rotundatis involutae, obtusae, 

 apiculatae, pallide virides, semipelkicidae, c. 0.3 cm. longae. 

 Flores patentes, c. 0.475 cm. lati, sepalis petalisque patentissirais, 

 incurvis, pallide viridibus, subsemipellucidis. Sepalum dorsale 

 SLibelliptico-oblongum, acutum, concavum, c. 0.43 cm. longum, 

 0.2 latum. Sepala lateralia oblique ovato-oblonga, apiculatoacuta, 

 concava, dorso carinata, c. 0.425 cm. longa, 0.2 cm. lata. Petala 

 oblongoelliptica, leviter obliqua, acuta, in utraque parte canali- 

 culae longitudinalis convexa, vix erosula, c. 0.375 cm. longa, 

 0.17 cm. lata. Labellum membrana angusta brevi mobiliter 

 insertum, in Ys P^''^'^ supra basin subrectangule recurvum, 

 Slobum, 3costatum, coctis 2 parallelis usque ad 2/^ partes 

 supra basin lobi intermedii productis inter lobos latérales altiset 

 pallide viridibus in lobo medio humilibus cinnamomeisque, costa 

 tertia multo minore sulcata apicem versus mox evanescente 

 pallide viridi interposita, explanatum c. 0.36 cm., usque ad 

 apicem loborum lateralium 0.225 cm. longum, ad lobos latérales 

 0.16 cm. latum; lobi latérales in c. 2/. partibus supra basin 

 labelli soluti, albidi, inferne irregulariter denticulati, parte libéra 

 porrecta, subulata, c. 0.08 cm. longa; lobus intermedius ambitu 

 obovato sexangulatus, apice late truncatus, erosulus, c. 0.2 cm. 

 longus, bene 0.2 cm. latus. Gynostemium curvatum, apicem versus 

 virescens, bene 0.23 cm., usque ad apicem alarum lateralium c. 

 0.16 cm. longum, alis lateralibus infra médium gynostemii ortis, 

 gynosteraio bene brevioribus, patentibus, incurvis, obliquis, margine 

 postico in lobulum obtusum dilatatis, auguste obtusis, albis, parte 

 libéra c. 0.08 cm. longis, ala apicali 31obula, lobulis lateralibus 

 obtusangulis, lobulo intermedio producto, triangulo, concavo, 

 clinandrio concavo. Anthera cucullata, abrupte breviter acute 

 triangulo-rostrata, alba, c. 0.05 cm. lata, connectivo alte conico- 

 gibboso, dilute viridi. Pollinia 4, globoso-pyriformia, flava. Rostellum 

 triangulum. Stigma obversetriangulum, margine elevatum. Ovarium 

 subglobosum, ôsulcatum, viride, c. 0.05 cm. longum; pedicellus 

 viridis, c. 0.175 cm. longus. 



'tj^ 



Sumatra: Benkoelen, Boekit Barisan, Rimbo Pengadang, 

 1000 m. (Exp. E. Jacobson, 1916, Ajoeb, liv. pi. cuit, in 

 Hort. Bog. sub n. 773). 



This differs from the allied D. gracile (Hook. f.) J. J. S. 



