ORCHIDACEiE 



tertia vestitus. Rachis arcuata vel flexuosa, bracteis nonnullis 

 adpressis imbricantibus sustenta. Racemus laxus, pauciflorus. 

 Bracteae inflorescentiae ovato-lanceolatae, acuminatae, convo- 

 lutae, ovaria pedicellata multo superantes, nervosae. Sepala 

 lateralia lineari-oblanceolata, acuta, plus minusve obtuse cymbi- 

 formia. Sepalum dorsale simile, paulo angustius, obtusum. Petala 

 linearia obtusa vel oblique subtruncata, prope apicem levissime 

 obliqua. Labellum in positu naturali tubulari-involutum et 

 gynostemium amplectens, simplex, anguste ellipticum. Carinae 

 tres, carina media fere ad apicem extensa. Gynostemium gracile, 

 strictum, apice late alatum ; ala apicalis crenato-undulata. 



Rhizome apparently stout, woody. Roots numerous, fibrous, 

 thick, much branched, generally glabrous, ±1.5 mm. thick. 

 Pseudobulbs clothed with the fibrous remnants of sheaths, about 

 3-4 cm. long, apparently cylindric to narrowly pyriform, mono- 

 phyllous, somewhat oblique, striate-sulcate, light yellowish in 

 the dried plant. Leaf 20-28.5 cm. long, 1.8-2.3 cm. wide, oblong- 

 linear, gradually narrowed to a complicate-mucronate apex, sim- 

 ilarly narrowed to the complicate base, strongly plicate, rigid, 

 erect, coriaceous. Petiole 5.5-7.5 cm. long, cylindric. Inflores- 

 cence heteranthous. Peduncle approximate to the pseudobulb, 

 decumbent at the base, glabrous throughout; below the inflo- 

 rescence 9.4-21 cm. long, spreading-erect, clothed for about 

 one-half its length with a series of ovate to narrowly lanceolate 

 tubular imbricating sheaths. Rachis up to 12 cm. long, arcuate 

 or flexuous, loosely few-flowered, subtended by several lanceo- 

 late appressed imbricating bracts which are up to 3.8 cm. long. 

 Floral bracts and floral segments extremely variable in size, the 

 former ±2.5 cm. long, ovate-lanceolate, acuminate, strongly con- 

 volute, scarious, nervose, far exceeding the pedicellate ovaries. 

 Sepals concave, slightly thickened near the apex. I^ateral sepals 



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