424 The Philippine Journal of Science 1913 
r 
Labellum 3-lobatum, 5 mm longum; lobi laterales falcati vel 
leviter curvati, oblongi, obtusi, 2 mm longi, vix 1 mm lati, inte- 
gerrimi ; lobus medius triangularis, acuminatissimus, 3 mm 
longus, prope basim 2 mm latus, intus pilosus, margine fimbriato, 
linea mediana incrassata. Gynostemium: generis. 
Mindanao: Lake Lanao, Camp Keithley, Mary Strong Clemens 999, 
March 1907. Flowers white. 
Dendrobium pergracile is closely related to D. acuminatissimum (Bl.) 
Lindl. from which it is easily separated by its smaller flowers. 
3. DENDROBIUM PHILIPPINENSE sp. nov. 
Herba epithytica, 20-40 cm alta, pergracilis, foliis acicularibus. 
Caules graciles, sursum teretes, internodiis prope basim angu- 
latis, incrassatis, sive intemodia inferiora fusiformia. Inter- 
nodii 1-4 cm longi, prope basim 3 mm in diametro, superne cir- 
citer 1 mm in diametro. Foliorum vaginae cylindraceae, in- 
ternodiis aequilongae. Folia teretia, acicularia vel subulata, vel 
filiformia, ascendentia, usque ad 10 cm longa, vix 1 mm in diame- 
tro, acuta. Flores flavidi, singuli, bracteae minutissimae. Pedi- 
cellus cum ovario circiter 9 mm longus, gracilis. Sepala lateralia 
antice triangula, acuta, postice in mentum leviter incurvum pro- 
ducta, pars anterior 5 mm longa, 3 mm lata, mentum circiter 6 
mm longum, obtusum. Sepalum dorsale 4 mm longum, lanceo- 
latum, acutum, 3-nervium. Petala lineari-lanceolata, acuta, 4.5 
mm longa, 1 mm lata. Labellum simplex, 1 cm longum, prope 
apicem 4.5 mm latum, breviter unguiculatum, oblongum, rotun- 
dato-apiculatum ad apicem, in disco carinae duo. 
Leyte, Dagami, C. A, Wenzel 6, November 20, 1912. 
In habit similar to Dendrobium aciculare Lindl. from which species 
it is clearly separable by means of the simple labellum. The labellum of 
D. aciculare is three lobed, with three raised lines on the disc. 
I refer here also the following specimens: 
Luzon: Laguna Province, Bur, Sci. 56^1 Griffin, July-Dec, 1909; 
without exact locality, W, 5. Lyon 67, June 1908 (in herb. Ames); A. 
Loher 6022, July 9, 1905 (specimen flowering in Manila). MiNDORO, 
Merrill 5658 (specimen flowering in Manila). 
In habit D. philippinense also resembles closely D. polytrichum Ames, 
from which it is at once distinguishable by means of the very different 
labellum. 
The United States National Herbarium contains a specimen {Loher 
487), without flowers, which appears to be closely related to if not 
identical with D. philippinense. This specimen is a duplicate of material 
which Kranzlin in his monograph referred to D. aciculare Lindl. 
Dendrobium Gerlandiamim Kranzlin (a species which I have not seen) 
from the description is a nearly related species. 
