ORCHIDACE.E 



nov. Caules nonnulli, approximati, prope basim oblongo-dilatati, 

 graciles, pluriarticulati, vaginis foliorum omnino obtecti. Folia 

 anguste linearia, abrupte rotundata, mucronata, rigida, crassis- 

 sima et in visu carnosa. Flores magni, singuli, e nodis superiori- 

 bus exorientes. Sepala apice cucuUata. Sepala lateralia anguste 

 triangulari-lanceolata, sensim acuminata, obliquissima, falcata, 

 mentum leviter saccatum formantia. Sepalum dorsale lanceo- 

 lato-lineare, acuminatum. Petala linearia, acuta. Labellum rhom- 

 biforme, subtrilobatum ; lobi laterales leviter triangulares, mar- 

 ginibus anterioribus late sinuatis; lobus medius triangularis, 

 acuminatus; fascia parva, regulariter tridentata infra medium 

 stat. Gynostemium breve crassum, ala trilobata et pede longo 

 latoque praeditum. 



Plant about 40 cm. or more tall, very gently arcuate. Roots 

 very long, very sparingly branched, more or less longitudinally 

 sulcate, about 1 mm. thick, occasionally produced from nodes of 

 the stem. Stems several, approximate, entirely invested by tubular 

 leaf sheaths, slender above, dilated near the base into an oblong, 

 one- to three-jointed, rugose pseudobulbous thickening which 

 is up to 3 cm. long, many-jointed, yellow to greenish-brown; 

 internodes about 1.6 cm. long, gradually dilated to each dark- 

 margined node. Leaves ±5 cm. long, 3.6 mm. wide, narrowly lin- 

 ear, abruptly rounded and sharply mucronate at the apex, nar- 

 rowed to a sessile base, ascending, rigid, very thick, apparently 

 fleshy in the fresh condition. Flowers large, rising singly from 

 the upper nodes and opposite to the leaves. Pedicels short, in- 

 vested below by several scarious bracts that become fibrous. 

 Perianth pellucid in the dried specimen. Sepals cucullate at the 

 apex. Lateral sepals about 1.8 cm. long, about 1.3 cm. wide, 

 narrowly triangular-lanceolate, very oblique, somewhat falcate, 

 long acuminate, forming a slightly saccate mentum at the base, 



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