320 AMES. 
with several tubular bracts. Leaves numerous, those near the rhizome 
often much reduced (1 cm. long, 5 mm. wide), those nearest the in- 
floreircense ovate-laneeolato, acute, comparatively large (2-4 cm. long, 
about 1.5 cm. wide). Peduncle graceful, ascending or erect, about 7 cm. 
long, provided with deflexed, linear, acute, about 4 mm. long bracts. 
Inflorescence ioosoly few-flowered. Pedicels slender, about 2 mm. long. 
Lateral sepals oblong-laneeolate, obtuse, 3 inm. long. Upper sepal similar 
to the laterals, but somewhat narrower. Petals linear, 3 mm. long. 
Labellum entire, bluntly sagittate, the auricles oblong, falcate, about 
2 mm. long. 
Terrestriciil at base of cliff in dense forest, at 5,800 ft. alt. on Mount Halcon, 
Nov. 15, 1900, Merrill (No. 5820). 
Microstylis (§ Eumicrostylis) quadridentata Ames sp. nov. 
Flowers similar in structure to those of M. oculata Eeiehb. f. Plants 
about 1.5 dm. tall. Leaves about 6, narrowly lanceolate, very acute, 
about 7 cm. long, 6 nnn. wide, dilated into a sheating base below the short 
petiole. Peduncle graceful, exceeding the leaves. Bracts linear, acute, 
the lowermost 4—5 mm. long, exceeding the short pedicels. Flowers 
purplish, in a rather strict raceme. Lateral sepals elliptic-ovate, very 
obtuse, rounded at the tip, 2 mm. long. Upper sepal similar to the 
laterals. Petals linear-o])long, about 2 mm. long, obtuse. Labellum 
auriculate, auricles triangular obtuse, less than 1 mm. long; blade of 
the labellum about 2 mm. long with a minute callus at base, shortly 
cleft at the apex, bidentate on each side at about the middle; distal tooth 
of each pair 1 mm. long, narrower and. longer than the basal teeth." 
Terrestrial in damp shaded ravine at 3,000 ft. alt, on Mount Halcon, Merrill 
{No. 5805 ) .—Terrestrial in forest at about 2,500 ft. alt. on Mount Ilalcon, Nov. 
10, l!)0(i, Merrill (No. 5818) type, 
CESTICHIS Pfitzer. 
Cestichis disticha (Thou.) Pfitzer in Engler & Prantl's Pflanzenfamilicu 2, 
pt. 6, p. 131 {lSHS).~}falaa^is disticha Tliouars Orcli. lies Afr. t. 88 (1882).— 
Liparis disticha Lindl. Bot. Reg. sub t. 882 (1825). 
On ledge in ridge forest at 1,800 ft. alt. on Mount Halcon, flowers odorless, 
reddish (yellow when dry), Nov. 8, 1000, Merrill (No. 5643).— Epipliyte in 
humid forest at 050 ft. alt. along the Einabay River, Nov., 1900, Merrill (No. 
5038). 
The material on which my determination is based has the spathulate petals 
and very characteristic labellum of the figure in Thouars's Flore dos lies Australes 
de J.'Afriqne and agrees with 0. disticha from Ceylon. The Mount Halcon plants 
are very unlike the Liparis disiicha Lindl. of Cuming's Philippine orchids and 
should not be confused with it. The Mount Halcon plants are the only specimens 
of C. disticha which I have seen from the Philippines. In habit C. gracilis Ames 
might readily be mistaken for it, but the floral parts at once distinguish it. The 
earning plant in LindJafs herbarium at Kew, determined hy JAndley as Liparis 
