ORCHIDACE.E 



nervo medio subtus carinato. Petiolus strictus, canaliculatus. 

 Pedicelli nbnnulli, aggregati, uniflori, bractea scariosa nervosa in 

 fibras soluta inclusi. Sepala lateralia tertia parte inferiore connata, 

 anguste lanceolata, sensim longe acuminata, apicibus condupli- 

 catis, basi concava. Sepalum dorsale lanceolatum, longe acumi- 

 natum, basi valde concavum. Petala multo minora, lanceolato- 

 linearia, prope basim lobo brevi porrecto. Labellum subhasta- 

 tum, apice obtusum, basi utrinque lobulo anguste falcato, ob- 

 tuso, valde incurvo et disco incumbenti praeditum ; discus inter 

 lobos basales callo parvo ornatus. Columna minuta, basi val- 

 dissime alata, ala subito angustata, apice triloba, lobo medio den- 

 ticulato. 



Plant epiphytic, up to 16.6 cm. high, the rhizome abbreviated 

 and conspicuously supplied with whitish, flexuose fibrous roots. 

 Secondary stems about 10 cm. high, monophyllous, erect, slen- 

 der, terete, with a nigro-annulate articulation near the base and 

 with two closely appressed scarious tubular bracts. Leaf about 

 6.35 cm. long by 2.4 cm. wide, elliptical, coriaceous, obtuse at 

 the tip, cuneate at base, middle nerve prominent beneath. Peti- 

 ole about 12 mm. long, rigid, canaliculate. Pedicels much re- 

 duced, aggregated, one-flowered, partly concealed by the sheath- 

 ing bract that soon breaks down into numerous fibres at the base 

 of the petiole of the leaf. Flower about 18 mm. long, brownish 

 and membranaceous in dried specimens. Lateral sepals about 17 

 mm. long, connate for about one third of their length, strongly 

 concave at base, each about 2 mm. wide at point of separation, 

 narrowly lanceolate, acuminate, acute, thickened at the apex and 

 somewhat conduplicate. Dorsal sepal 1.8 cm. long, 4 mm. wide 

 near the base, lanceolate, long acuminate, strongly concave, sub- 

 acute. Petals about 6 mm. long, .8 mm. wide below the middle, 

 linear-lanceolate, provided — about 2 mm. above the base — 



[ 118] 



