318 
AMES. 
Dendrochilum (§ Acoridium) recurvum Ames Orchidace®, fasc. 2 (1907) 
ined. — Acoridium recurvum Ames ,Proc. Biol. Soc. Wash. 19: 148 (1906). 
Epiphyte in ridge forest at 8,400 ft. alt. on Mount Halcon, flowers yellowish, 
Nov., 1906, Merrill (No. 5831). — On mossy trees, at 8,200 ft. on Mount Iialcon, 
Nov., 1906, Merrill (No. 5509). 
Dendrochilum (§ Acoridium) tenellum Ames Ocliidace®, fasc. 2 (1907) 
ined. — Acoridium tenellum Nees & Meyen Nov. Act. Nat. Cur. 19 (suppl. 1): 
131 ( 1843 ) . — Dendrochilum junceum Reichb. f. Bonpl. 3: 222 (1855). 
Epiphyte in mossy forest, on ridge, at 4,300 ft. alt. on Mount Halcon, flowers 
whitish, Nov., 1906, Merrill (No. 5839). — Near same locality, Nov., 1906, Merrill 
(No, 5720). 
Dendrochilum (§ Eudendrochilum) Woodianum Ames Orcliidace®, fasc. 
2 (1907) ined. 
Epiphyte at 6,800-8,000 ft. alt. on Mount Halcon, flowers dark red, odorless, 
Nov. 15, 1906, Merrill (No, 5816). 
This very interesting species belongs to the section Eudendrochilum, character- 
ized by a lateral inflorescence produced on a leafless shoot. The floral structure 
is mainly that of Acoridium. The species is named in honor of Maj. Gen. Leonard 
Wood, through whose interest the expedition to Mount Halcon was undertaken. 
Dendrochilum (§ Acoridium) sp. 
In habit similar . to D. oliganthum Ames. The immature flower shoots and 
withered remains of the persistent perianth insufficient for a sure diagnosis. 
Mount Halcon, Nov., 1906, Merrill (No. 5540). 
M ICROSTYLIS Nutt. 
M icrostylis (§ Eumicrostylis) alagensis Ames sp. nov. 
Plant about 25 cm. tall, slender, leafy at the base. Leaves lanceolate 
to ovate-lanceolate, acute, about 7 cm. long (sometimes those nearest the 
base much reduced), about 3 cm. wide. Flowers somewhat congested 
near the summit of the elongated peduncle. Bracts linear-lanceolate. 
Lowermost flowers purple, those along the middle of the spike yellowish. 
Lateral sepals suborbicular, 2 mm. long. Upper sepal elliptic-oblong, 
obtuse, slightly longer than the laterals. Petals linear-oblong, 2 mm. 
long. Labellum simple, broadly crescentiform, 2 mm. long from its tip 
to base of column, with a callus near the base; auricles (which form 
the horns of the crescent) triangular, acute, or subobtuse, distant from 
each other. 
Terrestrial in humid forest at 400 ft. alt. along the Alag River, flowers odor- 
less, Nov. 5, 1906, Merrill (No. 5801). — In forests along the Alag River, Nov., 
1906, Merrill (No. 5807) type. 
M icrostylis (§ Eumicrostylis) binabayensis Ames sp. nov. 
Plant about 3 dm. tall, leafy at the base. Leaves ovate-laneeolate, 
acuminate, acute, or subobtuse, 6-9 cm. long, 3.5-8 cm. wide, broadest 
near the base. Petioles about 2 'em. long, those of the lower leaves 
sheathing with their bases the bases of the petioles of the leaves above.- 
Peduncle about 2 dm. long, rather stout. Bracts linear, deflexed, about 
5 mm. long, shorter than the pedicels of the large yellow odorless flowers. 
