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spectante concava, nitide viridi, c. 0.45 — 0.6 cm. longa. Bracteae 

 rachidera amplectentes, adpressae, breviter et late subtriangulae, 

 obtusae, concavae, ruguloso-venucosae, nitide virides, dorso c. 0.2 

 cm. longae. Flores leviter odorati, carnosuli, nitidi, virides, c. 0.825 

 cm. lati. Sepalum dorsale cum ovario angulum obtusum faciens, 

 triangulum, anguste obtusum, concavulum, basi convexo-incrassa- 

 tum, dorso convexum, c. 0.36 cm. longum, 0.2 cm. latum. Sepala 

 lateralia angulum obtusum facientia, cymbiformi-incurvula, oblique 

 oblonga, acute acuminata, concava, basiincrassata, costa média dorso 

 ad basin incrassata apicem versus valde carinata, c. 0.44 cm., mar- 

 gine inferiore 0.5 cm. longa, 0.22 cm. lata. Petala patentia, oblique 

 oblongo-linearia, apice breviter triangulo-angustata, acuta, basi intus 

 leviter incrassata, dorso convexa,c. 0.325 cm. longa, beneO.l cm. lata. 

 Labellum porrectum, carnosum, subtrilobum, saccatoconcavum. api- 

 ce recurvulum, subsigmoideum, supra visum quinquangulare, subtus 

 late longitudinaliter sulcatum, callo oblongo longitudinal! intus 

 ad basin inter lobos latérales, nitidum praesertim subtus, flave- 

 scenti-album, apice pallide virescens, c. 0.57 cm. longum ; lobi 

 latérales abbreviati, erecti, vix rotundati; lobus intermedius 

 transverse quinquangulari-ovalis, apice breviter conico-productus, 

 c. 0.35 cm. longus, 0.45 cm. latus. Gynostemium brevissimum, 

 cum ovario angulum subrectum faciens, dilute viride, subtus 

 albidum, usque ad apicem rostelli c. 0.17 cm. longum, clinandrio 

 concavo. Anthera cucullata, transverse elliptica, in rostrum brève 

 triangulum truncatum convexum contracta, pallide flavescens, 

 c. 0.2 cm. lata. Pollinia 4, libéra, subpyriformiglobosa, leviter 

 compressa, pallide flava, stipite lineari, antice convexo, praesertim 

 superne marginibus recurvo, semipellucido, glandula mediocri, tota 

 c. 0.2 cm. longa. Rostellum raalleiforme. Ovarium 6sulcatum, 

 nitidum, viride, c. 0.15 cm. longum. 



Sumatra: Palerabang, Boekit Kaba, Soeban Ajam, 1200 m. 

 (Exp. E. Jacobson 1916, Ajoeb, liv. pi. cuit, in Hort Bog. 

 sub n. 1265). 



This is very near to Â. sumatrana .T. J. S., from which it 

 differs in the elongated stems, longer leaves, the more distinctly 

 threelobed lip broader at the base and hardly recurved at the 

 apex, and the shorter ovary. 



Description from a living spécimen. 



