92 ORCHIDACEM 



Pseudobulbs oblong, 1-3 cm. long, when immature clothed 

 with densely maculate sheaths. Leaves 6-7 cm. long, 7-9 mm. 

 wide, prominently 3-nerved, acute or obtuse, apiculate. Petioles 

 about 1 cm. Ions:. Peduncle below inflorescence longer than the 

 leaf, with several closely imbricating bracts. Bracts ovate from 

 a broad base, entire, 6 mm. long, longer than the ovary. Rhachis 

 of the inflorescence strongly zigzag, each internode forming a 

 right angle with the subtending bract. Floioers 8-9, large for the 

 section, 5-6 mm. apart, brownish red in a loose raceme. Lateral 

 sepals 6 mm. long, 3 mm. wide, lanceolate, acute, 3-nerved. 

 Upper sepal elliptic-oblong, 6 mm. long, 3 mm. wide. Petals 

 obovate, 5.5 mm. long, 4 mm. wide, somewhat erose on the 

 margin near the tip, 3-nerved, the lateral nerves branched. Label- 

 lum 4 mm. wide, 3-lobed ; lateral lobes 2.5 mm. long, apex acute, 

 reflexed ; middle lobe retuse-mucronate, acute ; margin on each 

 side of the mucro thickened into callus-like protuberances, from 

 each of which a conspicuous vein runs back to the tuberculate or 

 emarginate calli situated one on each side of the disc near the 

 base. Column stout, apex behind the anther crenulate. 



D. anfractum is most nearly allied to D. pumilum Reichb. f ., 

 from which it differs in the outline and calli of the lip, in the 

 venation of the petals, and in the very conspicuously zigzag rhachis 

 of the larger-flowered raceme. 



Epiphyte, alt. 7000 ft., Mt. Data, Distr. Lepanto, Luzon, Octo- 

 ber 20, 1905, E. D. Merrill (no. 4482). 



Endemic. 



15. D. SIMULACRUM sp. nov. Maxime D. pumilo Reichb. 

 f. affine, speciei quam habitu et structura haec species conspicue 

 simulat. Pseudobidbi graciles, a basi fastigati, 2-3 cm. longi. 

 Folium petiolatum, 3.5-7.5 cm. longum, 7-11 mm. latum, lan- 

 ceolatum, apiculatum. Petiolus circa 12 mm. longus, pergracilis. 

 Scapus flexuosus, rhachis inflorescentiae aliquid crassa. Flores 

 12-15, ad basim bracteis late ovatis 3 mm. longis arete amplexi. 

 Sepala lateralia 3 mm. longa, circa 2 mm. lata, late ovata, ob- 



