Smith : Ordiidaccac novae Malayenscs X. 43 



sublaxe multiflora, pediiiiculo filiformi, c. 6.5 — 13.5 cm. loiigo, rachide Icviler 

 flexuosa, lateraliter compresso-quadranjrula, lateribiis aii^nistis sulcata, c. 

 6.5 — 11 cm. loiiga, internodiis c. 0.2—0.5 cm. lonj^is. Bracteac conspicuae, 

 liateiites, pedicelium et floris partem iiiferiorem amplecteiites, iiivolutae, 

 abbreviato-orbiculares, c. Tiierviae, c. 0.6 cm. longae, 0.63 cm. iatac, 4—6 

 iiiferiores stériles, adpressae, imbricatae. Flores médiocres, j^labri, c. 0.75 cm. 

 lati, 0.775 cm. loiii>i, sepalis basi contigiiis. Sei3alum dorsale ovariiim coii- 

 tiiiiiiim, apice reciirvuiiim, auguste laiiceolatimi, aciitiim, leviter coiicavum, 

 3iierviiim, c. 0.775 cm. iongimi, 0.175 cm. latum. Sepala lateralia erecto- 

 patentia, supra basin concavam basiii iabelli amplectentem divergeiitia, 

 apice recurva, anguste obliqué laiiceolata, apicem versus sensim angustata, 

 acuta, obtusaiigule concava cum lateribus leviter convexis, apice canaiicuiata, 

 3nervia, costa média dorso promiiiula, c. 0.775 cm. loiiga, 0.14 cm. lata. 

 Petala erecta, sepalo dorsali adpressa, subparallela, vix divergeiitia, oblique 

 laiiceolata, acumiiiata, acuta, basi leviter contracta, superiia erosula, leviter 

 coiicava, 3iiervia, c. 0.675 cm. loiiga, 0.18 cm. lata. Labellum immobile, 

 erectum, simplex, supra basiii caiialiculato-coiicavam marginibus erectam 

 valde excavato-coiicavum subtus ventricosum, superne late canaliculato-coii- 

 cavuin cum marginibus convexis, dentibus marginalibus miiiutis pateiitibus 

 acutis c. 2 utrinque in '/4— Vs P^^te supra basin, 3nervium, lamellis 2 paral- 

 lelis altis tenuibus brevibus abrupte termiiiantibus basi transverse conjuiictis, 

 supra basin callo breviore antice incrassato et retuso interposito, explanatum 

 obverse quinquangulari-rhombeum, acuminatum, acutum, superne papillosum, 

 c. 0.66 cm. longum, supra basin c. 0.225 cm, superne 0.36 cm. latum. 

 Gyiiostemium brevissimum, dorse angulato-convexum, c.0.15 cm., usque 

 apicem alarum lateralium 0.175 cm. longum, alis lateralibus e dimidio 

 inferiore, porrectis, parallelis, linearibus, vix falcatulis, oblique acutis, alam 

 apicalem superantibus, ala apicali porrecta, concava, dorso convexa, qua- 

 drangula, apicem versus paulo angustata, truncata, irregulariter denticulata, 

 pede subnullo. Anthera cucullata, ambitu ovato-triangula, apice triangulo 

 subacuto recurva, basi bilobula, bene 0.05 cm. lata, connectivo crasse ob- 

 tuse gibboso. Pollinia 4, pyriformia, caudiculis filiformibus. Rostellum erecto- 

 patens, semiovale, rotundatum, apice subproductum, concavum, subtus 

 convexum. Stigma semiovale, margine inferiore rotundatum et paulo elevatum. 

 Ovarium brevissimum, 6sulcatum, c. 0.06 cm. longum; pedicellus aequicras- 

 sus, c. 0.1 cm. longus. 



Sumatra: Padangsche Bovenlanden, Laras Talang, Boekit Gombak, 

 1450 m., in a coffee plantation. (H. A. B. BuNNEMEIJER n. 5622, November 

 1918). Goenoeng Talang, 1300 m., on a tree. (H. A. B. BiiNNEMEljER n. 5655, 

 November 1918). 



A very distinct species allied to D. edentiilum Bl., with the bracts 

 inwrapping the basai portion of the flowers, and the lip ventricose above 

 the base. 



