59, 1 Ames and Quisumbing: Philippine Orchids, VI 8 
outline, prominently auriculate, about 6 mm long, 5.5 to 6 mm 
wide, 8- to 10-dentate on the anterior margin, extended at 
base into a pair of retrorse triangular-ovate rounded auricles. 
Disc in front of the column, with a semicircular lobulate callus. 
Gynostemium very short, 2-winged. Pollinia 4, pyriform, in 
pairs. 
LuZON, Benguet Subprovince, near Baguio, on rocks on the 
Naguilian Trail, Phil. Nat. Herb. 79 Mrs. K. B. Day, June 29, 
1934, 
The species is especially characterized by the purple color on 
the lower surface of the leaves, the purple flowers and the 8- 
to 10-sharp-toothed labellum. It differs from all its nearest 
allies—M. atrosanguinea Ames, M. bulusanensis Ames, and M. 
Taylori Ames—in its much broader petals and in the teeth on 
the anterior margin of the lip. 
Genus NEPHELAPHYLLUM Blume 
NEPHELAPHYLLUM MINDORENSE Ames. Plate 1, figs. 3 and 4; Plate 2, figs. 21 to 31; 
Plate 8. 
Nephelaphyllum mindorense AMES in Philip. Journ. Sci. 2 (1907) Bot. 
316, Orch. 3 (1908) 83, ¢. 55, 5 (1915) 48, in Merr. Enum. Philip. 
Fl. Pl. 1 (1924) 280. 
“Closely allied to N. pulchrum Blume. Plants about 2 dm. tall. Rhi- 
zome creeping, slender, rooting at intervals. Stems purple. Leaves with 
the under surface uniformly dark purple, upper surface mottled, ovate-lan- 
ceolate, acuminate, acute, 8-10 cm. long, 3-5.5 cm. wide near the base. 
Petioles relatively slender, about 3 cm. long. Peduncles exceeding the 
leaves, clothed with several scarious, tubular, acute sheaths. Inflorescence 
loosely few-flowered. Bracts about 1 cm. long, linear, acute, scarious, 
somewhat shorter than the pedicels of the white flowers. Lateral sepals 
linear-acute, 1-nerved, 9 mm. long, 1.5 mm. wide. Upper sepal similar and 
equal to the laterals. Petals oblong, acute, slightly broader above than 
below the middle, 1-nerved, about 8 mm. long, 3 mm. wide. Labellum 
suborbicular, entire, 9-10 mm. long, 9-10 mm, wide, with 3 prominent con- 
verging lamellae near the apex, which pass basally into the main nerves of 
the hairy disc. Spur blunt, inflated, 4-5 mm. long.”—AmEs, loc. cit. 
LUZON, Benguet Subprovince, Baguio, Phil. Nat. Herb. 80 Mrs. 
K. B. Day, June 29, 1934: Nueva Ecija Province, Mount Umin- 
gan, Bur. Sci. 26319, 26494, 29652 Ramos and Edano, August 
and September, 1916. MINDORO, along Binabay River, Merrill 
5623 (type in Phil. Nat. Herb.), November 2, 1906. 
The peduncles are purple; sepals and petals pale grass green 
flushed with light brownish olive and lined with purple-drab; 
labellum white except the lamelle orange-chrome; anther orange 
