ORCHIDACE^ 



rescentiae distichae. Flores succedanei. Sepala lateralia oblonga, 

 acuta, valde reflexa. Petala erecta, oblanceolata vel spathulata. 

 Labelluni obscure trilobatum ; lobi laterales parvi ; lobus medius 

 oblongo-ovatus, truncatus, pro parte papillosus; discus ad basim 

 callosus. Gynostemium breve, crassum. 



Pseudobulbs 5-10 mm. long, 3-4 mm. in diameter, approxi- 

 mate, minute, pyriform, attenuated toward the leaf base, mono- 

 phyllous, rugose. Leaf 22-36 cm. long, 5-7 mm. wide, linear, 

 grass-like when dry, acute, articulated. Petiole 14-24 mm. long, 

 persistent. Scape up to 24 cm. long, shorter than the leaf, con- 

 spicuously two-winged, naked below the inflorescence. Raceme 

 1.5-4.5 cm. long, elongating during anthesis, about 1 cm. wide. 

 Bracts of the raceme 6 mm. long, distichous, lanceolate, acute, 

 approximate, persistent, obliquely ascending, rigid, shorter than 

 the pedicellate ovary. Flowers yellow, opening in succession, 

 rarely more than one present at a time. Lateral sepals 5.5 mm. 

 long, about 2.5 mm. wide, oblong, acute, reflexed, margins re- 

 volute. Dorsal sepal pendent, similar to the laterals. Petals 6 mm. 

 long, 1-1.25 mm. wide above the middle, erect, linear-oblan- 

 ceolate, obtuse, attenuated below the middle. Labellum 5 mm. 

 long, somewhat three-lobed, sharply reflexed above the base; 

 lateral lobes rounded, each forming an auricle thickened with 

 a convex bullate callus ; middle lobe 3 mm. long, 2 mm. wide, 

 oblong-ovate, lingulate, truncate, papillose on the margins and 

 distal half, the middle of the upper half smooth, depressed. Disc 

 smooth with a large three-lobed callus near the column. Column 

 very short and stout, 2 mm. long, about 2 mm. wide, with two 

 blunt triangular wings just below the stigma. 



A large collection of specimens, Clemens 103, shows much 

 smaller vegetative proportions and considerably smaller lip of 

 the same peculiar character. 



[93] 



