ORCHIDACEtE 



ously carinate beneath. Petiole about 11-13 cm. long, stout, sul- 

 cate, the lower part enveloped — together with the approximate 

 scape — in one or more tubular scarious sheaths. Scape up to 

 more than 44 cm. long, at maturity equaling or surpassing the 

 leaf, provided with two remote large inflated infundibuliform 

 sheaths which are up to 7.4 cm. long, the upper of these appear- 

 ing looser and more prominent with the apex sheathing the 

 base of the rachis. Raceme more or less arcuate, rather densely 

 many-flowered. Bracts about 3-4 mm. long, lanceolate, acumi- 

 nate, subequal to or surpassing the pedicellate ovary. Flowers 

 small. Lateral sepals about 4.5-5 mm. long, 3-3.5 mm. broad, 

 obliquely triangular-lanceolate, complicate-mucronate, forming 

 a deeply saccate mentum, very indistinctly three-nerved with 

 only the mid-nerve prominent. Dorsal sepal about 4.5 mm. long, 

 1.6 mm. wide, oblong, obtuse or acute, strongly concave, one- 

 nerved. Petals about 3.1 mm. long, 1 mm. wide in the middle, 

 lance-oblong, broadly rounded at the apex, one-nerved. Lip in 

 natural position strongly decurved, the lower half membranaceous 

 with sides erect and conduplicate, the anterior half elliptic fleshy 

 convex with re volute margins ; lamina when expanded lingulate, 

 appearing subtrilobed, about 4-4.5 mm. long, 2.5 mm. broad 

 across the lower part, broadly obtuse, three-nerved with the 

 lateral nerves often somewhat carinate-thickened at the base. 

 Column minute, provided with a pair of triangular arms which 

 terminate abruptly in subulate or acuminate points. Column 

 foot unciform, furnished midway with a conspicuous porrect 

 tubercle. 



Some specimens collected by Clemens are less mature and 

 manifest wide vegetative variation, being smaller and having 

 thicker leaves. 



This species has numerous allies, but differs from all in having 



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