666 
AMES. 
calli at the base of the membranaceous deflexed middle tooth. The lateral lobes 
are setaceous, and, when in their normal position, strongly curved upward at 
the tip. The calli at the base of the labellum are peculiar in that they are 
linear and curved, not like papillae. The leaves in the present specimen are 
scarcely 4 cm long and about equal in length to the naked part of the peduncle. 
Luzon, Province of Benguet, Pauai, Bur. Sci. Ip312a Mearns, July, 1907. 
CESTICHIS Thou. 
Cestichis Clemensiae sp. nov. 
Aff. C. vestitae Ames. Planta par villa, erecta. Caules 3 ad 6 cm alti. 
Folia 2, oblonga, obtusa, 5.8 cm longa, circa 1 cm lata, coriacea, rigida. 
Bace?nus circa 8 cm longus. Bracteae inflorescentiae lineari-lanceolatae, 
acutae, pedicellis breviores. Scpala lateralia oblonga vel elliptica, obtusa, 
2 mm longa. Sepalum dorsale simile. Petala linearia, 2 mm longa. 
Labellum lanceolatum, 2 mm longum, ad apicem valde retusum vel biden- 
tatum. Columna arcuata. 
C. Clemensiae appears to be a near affinity of C. vestita which is a more robust 
species with much larger leaves and flowers. It is also closely related to Liparis 
tonfusa J. J. Smith, from which it is readily distinguished by its smaller stems 
and leaves and by its smaller flowers. The lips of C. vestita, Lipa/ris confusa, 
and C. Clemensiae are very similar. These species are most easily recognized by 
the differences in their vegetative parts. It may be that they represent forms 
of a polymorphic species, but until more material has been studied with this 
suggestion in mind they should be regarded as distinct from one another. I have 
seen six plants of C. Clemensiae. 
Mindanao, Lake Lanao, Camp Keithley, Mary Strong Clemens 129, February, 
1900. 
OBERONIA Lindl. 
Oberonia aporophylla Reichb. f. Bonplandia 3 (1855) 223. 
In my second list of the orchids collected in the Philippines for the Bureau 
of Science this species was included. The material on which determination was 
attempted consisted of fruiting specimens. Since the publication of Fascicle II 
of “Orchidaceae” more material has come to hand in which the flowers are in 
excellent condition for study. The labellum, petals, and sepals agree perfectly 
with the Sketch of a flower of 0. aporophylla in Lindley’s herbarium at Kew, 
and the habit of the plant' is like that of the material, numbered 2113, collected 
in the Philippines by Cuming. 0. aporophylla is a slender caulescent species 
about 2 dm tall with from 10 to 20, triangular, acute, obliquely ascending leaves 
which are about 2 cm long. The leafy stem terminates in a slender, rather 
loosely flowered, spicate raceme about 1 dm long. The labellum is subpandurate, 
emarginate, somewhat auriculate on each side at base, 1.5 mm long, the terminal 
portion is finely toothed. The petals are linear. 
Mindanao, Lake Lanao, Camp Keithley, Mary Strong Clemens 699, September, 
October, 1906. 
POLYSTACHYA Lindl. 
Polystachya luteola Hooker Exotic Flora 2: t. 103. 
I have seen a single plant of this species from Mindanao. In every detail its 
vegetative and floral parts agree with specimens in my herbarium from Florida, 
U. S. A., and from Cuba. Flowers from a plant collected near Miami, Florida, 
when moistened in water and laid beside flowers from the Philippines resembled 
them so closely that it was quite impossible to distinguish between them by any 
