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dorso minute finfuraceo-puncficulc'itis. Sep:ilum dorsale oblongiim ad lan- 

 ccolatiim, acutum, basi subcoiitiactum, leviter coiicavum, c. 2.2—2.3 cm. 

 longum, 0.74—0.9 cm. latiim. Sepala lateralia laciiiia anguste oblique triangula 

 ad pedem gynosteiuii decuirentia, meutum reversum cum ovario angulum 

 acutum facieiis anguste conicum leviter a dorso compressum vix recurvulum 

 obtusum retusum c. 0.8—1 cm. longum formantia, oblique lanceolata, acuta, 

 interne vix contracta, c. 2.2—2 3 cm., usque ad apicem menti 3.3 — 3.5 cm. 

 longa, 0.8 — 0.9 cm. lata, basi c. 1.3—1.45 cm. metientia, Petala lanceolata, 

 acuta, basi angustata, concava, c. 2.1—2.25 cm. longa, 0.65 cm. lata. La- 

 bellum ungue lineari canaliculato pedi gynostemii longitudine c. 0.5 — 0.55 

 cm. adnatum, cuneatum, 31obum, 5costatuni, costis parallelis, in lobo inter- 

 medio tenuioribus aliformi-elevatis, ultra médium lobi intermedii undulatis 

 et superne evanescentibus. costis exterioribus brevissimis mox evanescen- 

 tibus, 2 sequentibus maxiniis liaud in unguem decurrentibus, inter lobos 

 latérales dorso latis planis sectione transversa Tformibus flavescenti-albis, 

 Costa intermedia in unguem decurrente inter lobos latérales quam exteriores 

 minore dorso plana dilute flava, subtus obsolète sulcatum, totum expla- 

 natum c, 3.35 cm., usque ad apicem loborum lateralium 2 cm. longum, 

 mesochylio cuneato, usque ad basin lobi intermedii c. 1.26 cm. longo. apice 

 1.15 cm. lato; lobi latérales parvuli, erecti, aiitice breviter producti, oblique 

 trianguli, obtusi, intus longitudinaliter purpureo-striolati ; lobus intermçdius 

 magnus, recurvus, ex ungue brevissimo in laminam flabellatam angulato- 

 cuneato-suborbicularem apice lato leviter et late retusam et dente triangulo 

 acuto instructam valde plicatam et sinuatam disco radiatim ruguloso-ner- 

 vosam dilatatus, pallide flavescens, c. 1.7 cm. longus, basi 0.45 cm., superne 

 2—2.2 cm. latus. Gyiiostemium sectione transversa semiorbiculare, dorso 

 convexum, album, c. 0.5—0.6 cm. longum, clinandrio excavato, filamento 

 triangulo basi dorso convexo apice filiformi, auriculis latis, oblique 21obulis, 

 lobulo antico longiore, erosulo. Anthera cucullata, antice visa ovato-qua- 

 drangula, apice breviter contracta, truncata et puberula, alba, c. 0.275 cm. 

 lata. Pollinia 4, corpusculum subrotundum supra convexum subtus concavum 

 formantia, nitida, lutea. Stigma alte excavatum, orbiculare. Pes gynostemii 

 cum ovario angulum acutum faciens, subrecurvulus, oblongus, apicem versus 

 angustatus, praesertim apicem versus canaliculatus cum costa conspicua 

 longitudinaliter sulcata, basi albus, ^/g partibus superioribus dilute flavus 

 vel pallide aurantiacus, c. 0.77—0.8 cm. longus. Ovarium anguste obco- 

 nicum, 6sulcatuni, nitidum, flavescenti-album, minute furfuraceo-punctatum, 

 cum pedicello brevissimo c. 0.8—0.9 cm. longum. 



Bornéo: Pontianak. (Cuit, in Hort. Bog. 11 M, bl33, d53). 



Allied to D, flabellum Rchb, f., but much more robust in ail its parts, 

 with larger differently coloured flowers, and the keels of the lip only wavy 

 at their end. 



Description from cultivated spécimens. 



