46 Bulletin Jard. Bot. Buitenzqrg, Série III, Vol. V. Livr. i. 



margine inferiore obtusangulum vix elevatum. Ovarium ôsulcatum, c. 0.1 

 cm. longum, pedicello c. 0.15 cm. longo vix crassius. 



Sumatra: Padangsche Bovenlanden, Laras Talang. Goenoeng Talang, 

 2450 m., in brushwood. (H. A. B. BiiNNEMEljER n. 5501, November 1918). 



in spite of tlie weli developed side lobes of tlie lip this is to be 

 recl<oned amongst the nearer allies of D. corniitiim Bl. in a dry state it is 

 easily recognized by the tufted linear stiff transparent leaves, wliich, ! sup- 

 pose, are fleshy on the living plant. 



The flowers are said to be white to light green. 



Description from herbarium and an inflorescence preserved in alcohol. 



var. mcrapiensc J. J. S. n. var. 



Rhizoma valde ramosum, vaginis acutis dense prominenter nervosis, 

 opacis, radicibus crassiusculis. Pseudobulbi aggregati, sicco teretes, rugosi, 

 c. 2 — 3 cm. longi. Folium lanceolato-lineare, apicem versus angustatum, 

 auguste obtusum, subapiculatum, basi acutum, nervis c. 5 majoribus pro- 

 minentibus, papyraceum, c. 5.5 — 10 cm. longum, 0.5 — 1 cm. latum; petiolus 

 c. 0.5 cm. longus. Inflorescentia in pseudobulbo immaturo folio fere evoluto 

 synantha, subdense multiflora, pedunculo tenuiter filiformi, 5 — 7.25 cm. 

 longo, rachide lateraliter compresso-quadrangula, lateribus angustis sulcata, 

 c. 6.5 — 8 cm. longa, internodiis c. 0.175—0.225 cm. longis. Bracteae pa- 

 tentes, rachidem semiamplectentes, ovarium pedicellatum marginibus involutis 

 includentes et multo superantes, late ovato-triangulae, obtusae vel subacutae, 

 basi lata utrinque rotundatae, subtrinerviae, c. 0.37 cm. longae et latae, 

 infima sterilis. Flores teneri, c. 1 cm. lati. Sepalum dorsale lanceolatum, 

 apicem versus sensim angustatum, acutissimum, leviter canaliculatum cum 

 lateribus convexis, 3nervium, c. 0.55 cm. longum, 0.16 cm. latum. Sepala 

 lateralia similia, patentissima, obliqua, tenuiter apiculata, 0.16 cm. lata. 

 Petala oblique lanceolata, acutissime acuminata, basi leviter contracta medio 

 tantum affixa, basi excepta erosula, obtusangule concava cum lateribus 

 convexis, 3nervia, c. 0.5 cm. longa, 0.15 cm. lata. Labellum ima basi a 

 gynostemio patens, supra basin incurvo-porrectum, 31obum, basi lata 

 utrinque rotundata medio tantum insertum, subtus inferne convexum cum 

 costula longitudinali, 3nervium, costis 2 brevibus parallelis basi callo trans- 

 verso conspicuo antice inter costas minute bigibboso conjunctis basin 

 lobi intermedii non attingentibus supra basin inter lobos latérales, expla- 

 natum ambitu subovatum, c. 0.45 cm., usque apicem loborum lateralium 

 0.2 cm. longum, ad lobos latérales 0.25 cm. latum; lobi latérales satis 

 conspicui, porrecti, oblique obiongi, basi valde obliqui, apice leviter incur- 

 vuli, margine exteriore superne erosuli, gynostemium superantes; lobus 

 intermedius adscendens, marginibus recurvis convexus, ovato-ellipticus, 

 acuminatus, acutissimus, erosuJus, papillosus, c. 0.33 cm. longus, 2 cm. 

 latus. Oynostemium brevissimum, dorso convexum, alis lateralibus in 



