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I 



giiic et striis 5 bisiii Iriud attingentibus atropurpureis, raro striis paucis 

 transversis reticiilalum, c. 0.5 cm. loiigiiiii, bene 0.2 cm. latiim. Sepala 

 lateralia falcato-triangula, aciita, concava, dorso cariiiata, margiiie glabra, 

 semipellucide albida, apice praescrtim dor^so ochrascentia, margine et striis 

 5 atropurpiireis, c. 0.48 cm. longa, 0.25 cm. lata. Petala porrecta, inciirviila, 

 lanceolata, obtusa, longe ciliata, semipellucide albida, apice ochrascentia, 

 margine lata et stria longitiidinali atropurpureis. c. 0.26 cm. longa, 0.06 cm. 

 lata. Labelluni mobile, cuivatum, carnosum, oblongum, apice anguslatum, 

 obtusum, interne subcaiialiculatum, basi truncatum cum denticulo minimo 

 utrinque, superne supra margine angusto patentissimo carnoso excepto 

 convexo-incrassatum, parte convexa basin versus convexo-tricostatum, costa 

 intermedia in basi labelli satis humili et purpurascenti superne elevata et 

 in parte convexa evanescente vix purpurascenti-alba, fascia alba usque ad 

 apicem producta et omiiino viscida, subtus parte superiore convexo-incras- 

 satum et longitudinaliter sulcatum, longe basin versus breviter ciliatum, 

 supra praesertim in parte atropurpurea dense papillosum, fascia pallida 

 excepta atropurpureum, c. 0.34 cm. longum, 0.16 cm. latum. Gynostemium 

 rectum, supra b;isin late alato-dilatatum, dorso convexum, subtus concavum, 

 flavescenti-album, apice dilute flavum, interne purpureo-marginatum, c, 0.17 

 cm. longum, apice triangulo, auriculis majusculis, latis, oblique ovato- 

 triangulis, obtusis, anthera paulo brevioribus. Anthera cucullata, ambitu 

 quadrangula, basi biloba, lobis obtuse triangulis irregulariter marginatis 

 albis, connectivo convexo-incrassato, apice bilobo et longe ciliato, flavo, 

 margine rubro-suffuso, c. 0.07 cm. lata. Pollinia 4, lateraliter compressa, 

 oblique semiovalia, flava, c. 0.05 cm. lata. Rostellum distincte truncatum. 

 Stigma quadrangulum. Pes gynostemii cum ovario angulum obtusum tormans, 

 rectus, linearis, apice excavato-concavus, truncatus, albus, atropurpureo- 

 marginatus, apice atropurpuree punctato-maculatus, c. 16 cm. longus. 

 Ovarium pedicellatum vix sigmoideum, 6sulcatum, albidum, purpureo- 

 notatum, c. 0.2 cm. longum. 



Sumatra: Benkoelen, Boekit Barisan, Rimbo Pengadang, 1000 m. (Exp. 

 E. Jacobson 1916, Ajoeb, liv. pi. cuit, in Hort. Bog. sub n. 807). 



Though 1 hâve seen no type specirnen I venture to regard this curions 

 plant as a mère variety of Bulbophylhim trichoglottis Ridl. It differs trom 

 the description of that plant by the smaller pseudobulbs, narower leat, 

 only 2 — 4flowered peduncles, striate rarely somewhat reticulated sepals, the 

 curved lip provided with a very distinct whitish central line and densely 

 papillate especially on the dark parties, and the anlher quadrate in outline 

 bilobed and hairy at the apex. 



Description from living and dried plants and spécimens preserved in alcohol. 



^ Bulbophy 11 um (sect. Sestochilos) e le vatopu ne ta t u m J. J. S. n. sp. 



Rhizoma repens, teres, c. 0.4 cm. diam. Pseudobulbi c. 2.5 cm. dissiti. 



oblongo-ovoidei, apicem versus attenuati, antice canaliculis 2 longitudinalibus 



latis altisque instructi, deinde longitudinaliter costati, sordide virides, c. 3.2 



