Smith : Orchidaceae novae Mulaycnses X. 39 



coiitracto-acuniiiiatiim, aciitiim vel obtiisiusciiliini, basi acutum, nervis c. 7 

 majoribus pliiribiisque teiiuibus sicco supra siibtiisque proniiiuilis, firniiter 

 papyraceiim, siibseniipellucidum, opaciim, c. 8.5 — 14 cm. loiigiini, 2—3.5 

 cm. latiim ; petiolus caiialiculatus, c. 0.9 — 1.1 cm. longus. Iiifloresceiitia in 

 pseudobulbo immature folio haud vel vix evoluto syuantlia, la'xe muitiîlora, 

 peduiiculo filiformi, c. 5 cm. loiigo, rachide arcuato-recurva, flexuosa, com- 

 prcsso-quadraiigula, glabriuscula, lateribus aiigustis canaliculata, c. 10 cm. 

 loiiga, iiiteniodiis c. 0.35 cm. loiigis. Bracteae coiivolutae, pedicellum am- 

 plecteiites, late ovatae, breviter acutae, basi brevissime contractae, nervis 5 

 majoribus et nonnullis minoribus dorso prominentibus, bene 0.4 cm. longae, 

 0.34 cm. latae. Flores médiocres, patentes. Sepalum dorsale obtusangule 

 canaliculatum, lateribus leviter convexis, lanceolatum, sensim longiuscule 

 acuminatum, acutum, 3nervium, c. 0.65 cm. longum, 0.175 cm. latum. 

 Sepala lateralia obtusangule concava, lateribus leviter convexis, apice recurvula, 

 oblique lanc'eolata, sensim longe acutata, acuta, 3nervia, ecarinata, c. 0.65 cm. 

 longa, 0.175 cm. lata, Petala suboblique elliptico-lanceolata, leviter acuminata, 

 acuta, obtusangule concava, 3nervia, basi excepta minute erosula, bene 0.6 cm. 

 longa, fere 0.2 cm. lata. Labellum gynostemio parallelum porrectum, 31obum, 

 3nervium, lamellis 2 longitudinalibus parallelis erectis rotundatis duplo 

 longioribus quam altis hypochylio aequilongis basi supra basin labelli costa 

 transversa antice minute bicallosa connexis in hypochylio, c. 0.44 cm. longum ; 

 lobi latérales patentissimi, brèves, lati, antice in dentés 1 — 2 minimos irre- 

 gulares abientes, erosuli, hypochylium conspicuum lobo intermedio fere 

 aequilatum transverse quadrangulum basi utrinque rotundatum subtus sulcis 

 2 longitudinalibus convexo-tricostatum c. 0.16 cm. longum bene 0.2 cm. 

 latum formantes; lobus intermedius porrectus, lateribus incurvulis concavus, 

 apice recurvulus, ovatus, acute acuminatus, basi breviter et late angustatus, 

 erosulus, c. 0.28 cm. longus, 0.25 cm. latus, Gynostemium minutum, subrectum, 

 dorso obtusangule convexum, oblongum, totum c. 0.13 cm. longum, alis 

 lateralibus supra médium ortis, incurvulis et sub ala apicali decussatis, 

 lineari-filiformibus, alam apicalem porrectam subtus vix concavam 2dentatam 

 bene superanibus, pede subnullo. Anthera cucullata, a dorso compressa, 

 antice visa ovata, apice obtusa recurvulaque, connectivo sensim alte rotun- 

 dato-conico-incrassato, c. 0.04 cm. lata. Pollinia 4, pyriformia. Rostellum 

 majusculum, cum clinandrio angulum acutum faciens, subsemiorbiculare, 

 canaliculato-concavum, apiculo recurvulo. Stigma semilunatum, cum rosteflo 

 suborbiculare, margine elevatum. Ovarium brève, rotundato-subtrigonum, 

 6sulcatum, fere 0.1 cm. longum, cum pedicello subaequicrasso c. 0.16 

 cm. longo angulum obtusum faciens. 



Sumatra: West coast, Korintji Peak, 1800 m., in forest. (H. A. B. 

 BuNNEMEljER n. 9704, April 1920). 



\n habit this plant resembles closely D. latilobiim J. J. S., only the 

 sheaths are punctate. The flowers, however, are much larger, the sepals 



