598 AMES. 
develop. This characteristic is frequently misleading and not unlikely to cause 
confusion. The leaves of the specimens from Luzon measure 6.5 cm in length 
and 1.5 em in width. 
The collector’s notes state that the plants were found at an altitude of 
1,400 m and that the flowers are white and fragrant and very ornamental. 
DENDROBIUM §&w. 
D. hymenanthum Reichb. f. in Bonplandia 3 (1855) 222; Walpers Annales 
Botanices Systematicae 6: 302. 
This very rare species which was among the novelties secured by H. Cuming 
(no. 2135) in the Philippine Islands has been twice collected by the botanists of 
the Bureau of Science. It is closely related to Dendrobium Micholitzti Rolfe 
(ef. Ames Orchidaceae 1: 41, pl. 11). The stems are yellow, about 8 cm long, 
quadrangular, very slender, bifoliate at the summit, with the oblong-elliptic 
leaves 2-3.5 em long, 8 mm wide. The flowers, which are borne at the summit 
of the stem, are fragrant; the mentum is tinged with “purple” outside. Pedicels 
slender, subfiliform, about 2 cm long. Lateral sepals triangular, acute, prolonged 
into a stout, curved, obtuse mentum; from tip of sepals to tip of mentum 16 
mm long. Upper sepal lanceolate, 7 mm long. Petals similar to the upper 
sepal, but narrower, 5 mm long. Labellum about 2 cm long, somewhat oblan- 
ceolate, dilating gradually from the cuneate base to the rounded, 7 mm wide 
apex; near the apex is a small crest of short, yellowish hairs. 
The director of the Royal Botanic Gardens at Kew has very kindly compared 
my material with the Cuming specimen preserved in the Kew Herbarium and has 
assured me that the specimens collected by Ramos are conspecific with the Cuming 
plant. 
Montalban, Province of Rizal, Luzon, W. Schultze, May, 1908, Bur. Sci. 5610; 
Maximo Ramos, July 29, 1907, Bur. Sci. 3035. According to Ramos the flowers 
last a very short time. 
Note.—From an excellent photograph which accompanies the plants collected 
by Ramos it appears that the flowers are produced singly at the summit of the 
stem. 
D. epidendropsis Kriinzlin in Orchis 2 (1908) 79, fig. 
The material which I have identified as D. epidendropsis was collected by W. S. 
Lyon (no. 118). Although a native of the Philippine Islands the exact locality 
from which Mr. Lyon’s plant came is not known. Mr. Lyon flowered it in his 
garden in November, 1908. He described the flowers as greenish-yellow, coriaceous 
in texture, wax-like, and both within and without glossy as if varnished. A 
single leaf, and what appears to be an undersized stem and three flowers constitute 
the specimen at hand. The leaf is oblong-lanceolate, 7 em long, 1.5 em wide, 
subcoriaceous. The stem is fusiform, clothed with several scarious sheaths, at 
the summit is a short raceme, 2 em long, which bears three 3 em long flowers. 
The flowers are conspicuous because of the long subfaleate mentum which is 2 em 
long and about 3 mm in diameter. 
In the herbarium of the Bureau of Science there are three specimens which 
agree with my interpretation of Dendrobium epidendropsis. Two of these were 
collected on Mount Mariveles, Province of Bataan. The third specimen was 
taken in the Province of Rizal. 
Lamao River, Mount Mariveles, Province of Bataan, Luzon, growing on trees on 
exposed ridges, at an altitude of 900 m, flower odorless, lip bright, pale-green, 
petals pale-green with 3 or 4 brown stripes from base to tip, December 10, 1904, 
T. E. Borden, For. Bur. 2109; near same locality, on trees, flowers yellow with | 
