ORCHIDACEJE 



leviter retusus ; discus bicarinatus. Gynostemium ad apicem ala- 

 tum; ala dentata. 



Roots few, 2 mm. thick, fibrous, flexuous, glabrous. Pseudo- 

 bulbs 5.5 cm. long, 11 mm. in diameter at the base, narrowly 

 cylindric, dull yellowish and sulcate in dried specimens, invested 

 by the copious fibrous remains of sheaths, monophyllous. Leaf 

 up to 19 cm. long, 6 cm. wide at the middle, oblong, above 

 abruptly truncated and mucronate, below gradually contracted 

 into the long stout petiole, rigid, coriaceous, about nine-nerved, 

 mid-nerve prominent and rounded beneath. Inflorescence synan- 

 thous, somewhat shorter than the petioled leaf, in early growth 

 clothed up to the raceme with several closely imbricating sheaths. 

 Raceme lax, rachis glabrous. Flowers ten or less, expanding 

 simultaneously. Lateral sepals lanceolate, about 1.8 cm. long, 

 7 mm. wide, narrowed to an obtuse point, concave at the base, 

 indistinctly seven-nerved, on the dorsal surface broadly carinate 

 along the mid- vein. Dorsal sepal 1.7 cm. long, 8 mm. wide, simi- 

 lar to the laterals, inconspicuously carinate along the median 

 nerve. Petals linear, 1.7 cm. long, 1 mm. wide. Labellum three- 

 lobed, ±1.8 cm. long, 1.4 cm. wide across the middle, obovate 

 in outline ; lateral lobes 5 mm. long, 1.8 mm. wide, linear-oblong, 

 falcate, obtuse; middle lobe unguiculate, the claw as long as the 

 lateral lobes, limb 9 mm. long, 1.4 cm. wide, subquadrate, broadly 

 retuse, bluntly and minutely apiculate; disc bicarinate. Column 

 1.2 cm. long, stout, toward the apex very broadly winged, the 

 terminal part of the wing truncate and sharply and irregularly 

 dentate. 



Clemens 233 is a much more mature specimen than the type, 

 and is characterized by a tall suberect scape that bears flowers 

 with slightly but uniformly larger sepals and petals. Clemens 231 

 is intermediate in its vegetative parts between a plant of Clem- 



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