Smith : Orchidaceae novae Mulayen ses X. 79 



mareiiie inferiore 2.7-3 cm., apice non fisso 0.7^0.Q cm. lon^a. basi 

 0.9-1 cm. metientia, supra basin 0.75—0.85 cm. lata, iiltima decrescentia ; 

 vaoinae tiibulosae, lateraliter conpressae. Inflorescentiae axillares et ad apicem 

 caulium, mitantes, deinde ramosae et capituliformcs, peduiiciilo curvato, 

 c. 1 cm. loiigo, omniiio vaginulis adpressis imbricatis late ovato-triangulis 

 acutis ai^iculatis concavis dorso carinatis superioiibus accrescentibus dense 

 obtecto. Bracteae vaginulis similes, latae, apiciilatae. Flores carnosi, fere 

 1.1 'cm. longi (macerati), sepalis petalisque parallelis, apice recurvulis. Sepalum 

 dorsale oblongum, obtusum, dorso ad apicem leviter incr'assatum, concavum, 

 superne leviter convexiim, 3nervium, c. 0.7 cm. longum, 0.3 cm. latum. 

 Sepala lateralia cum pede gynostemii mentum breviiisculiim cum ovario 

 angulum fere rectum faciens dorse valde curvatum convexum obtusum 

 c. 0.42 cm. longum formantia, oblique triangula, obtusa, basi rotundata, 

 concava, 3nervia, c. 0.7 cm., margine antico 0.8 cm. longa, basi 0.63 cm. 

 lata. Petala oblonga, rotundata, basi breviter angustata. dorso obtusangule 

 convexa, Inervia, bene 0.5 cm. longa, 0.2 cm, lata. Labellum erecto-patens, 

 leviter undatum, oblongum, subtus convexum, dimidio inferiore fere basin 

 versus paulum angustato, basi truncato, medio canaliculato, glabro, marginibus 

 latis velutino-papilloso, dimidio superiore verruculoso-pulvinato et pilis brevi- 

 bus clavatis dense vestito, marginibus lateralibus recurvulo, apice rotundato, 

 incrassatione levi transversa convexa antice excavatione suborbiculari limitata 

 a parte inferiore separato, subtus ad apicem callo conspicuo conico acuto 

 instructo, totum explanatum c. 0.7 cm. longum, basi 0.18 cm., superne 

 0.34 cm. latuFii. Gynostemium ovarium continuum, c. 0.225 cm. longum, 

 clinandrio excavato, filamento subulato, auriculas parallelas rotundatas 

 concavas bene superante. Anthera cuculiata, ambitu subsexangulato-obovata, 

 apice excisa, c, 0.14 cm. lata. Pes gynostemii cum ovario angulum acutum 

 fere rectum faciens, valde incurvus, oblongus, marginibus parallelis, concavus, 

 crasse carnosus, c. 0.425 cm. longus. Ovarium obconicum, apice valde 

 obliquum, leviter ôsulcatum, c. 0.2 cm. longum. 



Sumatra: Bataklanden, Toba, 1450 m. (O. HAGERUP n. 29, 

 1916— '17). 



This differs from D. tropidoneiiron SCHLTR. in the longer sepals not 

 or indistinctly apiculate and without prominent veins, the shorter mentum 

 and the large callus of the lip, from D. deliense SCHLTR. in the shorter 

 leaves, the sepals not being apiculate, the proportionally short mentum, 

 and from D. minutigibbiun J. J, S. in the longer sepals, short mentum and 

 large callus of the lip. 



The indumentum of the apical portion of the lip appears at first sight 

 to be caused by a fungus. 



The colour of the flowers seems to hâve been dark red. 



Description from dried spécimens. 



