ORCHIDACE^ 



sed breviora. Labellum trilobatum, expansum ellipticum, cari- 

 nis duabus approximatis e basi usque ad medium decurrentibus; 

 lobi laterales erecti, porrecti, triangulari-oblongi, obtusi; lobus 

 medius in positu natural! reflexus, expansus triangulari-ovatus, 

 mucronatus. Gynostemium gracile, alis utrinque praeditum. 

 Anthera pileata. Pollinia duo, triangulari-ovoidea. 



Plant slender, for the genus. Rhizome stout, woody. Roots 

 very stout, rigid, fibrous, subnumerous, longitudinally sulcate, 

 somewhat branched, about 3-4 mm. thick. Pseudobulb up to 

 about 5.5 cm. long, slender cylindric, provided with five to seven 

 leaves, closely invested by the leaf sheaths and fibres of sheaths. 

 Sheaths ±13 cm. long, slender, rigid, channeled, striate-sulcate, 

 articulated with the blade by an uneven erosely angulate joint. 

 Leaves up to more than 53 cm. long, 1 cm. broad, very narrowly 

 linear-lorate, thick and coriaceous, mid-nerve prominently sul- 

 cate above and carinate beneath, lateral nerves more or less con- 

 picuous beneath. Scape approximate to the pseudobulb, strongly 

 arcuate, up to about 35.3 cm. long, 3 mm. thick below, peduncle 

 up to the raceme clothed with several lanceolate, conduplicate, 

 imbricating, scarious sheaths. Raceme loose, as many as eighteen- 

 flowered. Bracts of the inflorescence about 6 mm. long, incon- 

 spicuous, tubular-involute, when spread out narrowly triangular, 

 long acuminate, apparently scarious, three-nerved. Flowers 

 rather large, perianth spreading. Lateral sepals about 2.45 cm. 

 long, 5-5.5 mm. wide across the middle, oblong-linear, acute, 

 broadly carinate and mucronate at the apex, about seven-nerved. 

 Dorsal sepal very similar, about 2.5 cm. long, 5.5-6 mm. broad in 

 the middle, complicate-mucronate. Petals oblong, about 2 cm. 

 long, 5-5.5 mm. broad across the middle, when expanded obtuse 

 and mucronate. Lip adnate to the column, in natural position 

 parallel to the column, three-lobed, with the lateral lobes erect, 



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