ORCHIDACEiE 



lanceolatum, acutum, breviter petiolatum. Pedunculus valde 

 elongatus, gracilis. Bracteae inflorescentiae flores aequantes. 

 Sepala lateralia oblongo-lanceolata, acuta. Sepalum dorsale si- 

 mile. Petala angustiora. Labellum trilobatum, bicarinatuni ; lobi 

 laterales serrati ; lobus medius cuneato-ovatus, apiculatus. Gyno- 

 stemium gracile. Stelidia lateralia linearia, ad medium gyno- 

 stemii. Ala apicalis integra vel obscure lobata, rotundata. 



Pseudobulbs approximate, contiguous, much elongated, 5.5- 

 9 cm. long, very slender, in dried specimens up to 5 mm. in di- 

 ameter, cylindraceous or fusiform, monophyllous. Leaf 8-1 5 cm. 

 long, 3-4.3 cm. wide, elliptic-lanceolate, attenuated at both 

 ends, chartaceous in dried specimens, prominently nine-nerved, 

 contracted rather abruptly into a short petiole 4-10 mm. long, 

 much exceeded by the elongated, flexuous, curving and droop- 

 ing raceme. Flower shoot ±4 dm. long including the raceme; 

 naked portion ±4 cm. long. Raceme less than 1 cm. in diameter, 

 slender, sometimes with as many as one hundred and thirty-five 

 flowers, furnished below the raceme with three to four closely 

 appressed, brownish, sterile, glume-like bracts. Bracts subtending 

 the pedicellate ovary 2 mm. long, embracing the base of the peri- 

 anth. Flowers yellow, 4 mm. apart. Lateral sepals 4.5 mm. long, 

 oblong-lanceolate, acute, rounded at the base. Dorsal sepal simi- 

 lar. Petals about 4 mm. long, linear-lanceolate, narrower than the 

 sepals, acute, entire. Labellum about 3.5 mm. long, brownish on 

 the disc,three-lobed; lateral lobes narrowly triangular with a seta- 

 ceous tip, serrate on the outer margin, with the tips reaching to 

 about the middle of the cuneate-obovate, apiculate middle lobe ; 

 middle lobe 2.5 mm. long, 2 mm. wide, entire, bicarinate at the 

 base, with the carinae joined to the base of the thickened or raised 

 median nerve. Gynostemium about one-half as long as the dor- 

 sal sepal, slender at base. Lateral stelidia arising just below the 



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