NOTES ON PHILIPPINE ORCHIDS, IV. 
19 
long, about 6 mm wide, base sheathing. Sheathing bases of the 
leaves tubular, in dried specimens tinged with purple, about 
1 cm long. Flowers pale-purplish, in short lateral racemes. 
Peduncle 1 cm long. Bracts lanceolate, purplish, 2 mm long. 
Pedicellate ovary about 1 cm long, pedicel very slender. Flowers 
about 5, about 1 cm long, with a sharply curved mentum. Late- 
ral sepals oblong, obtuse, somewhat cucullate at the tip, 3 mm 
wide. Upper sepal cucullate, lanceolate, 6 mm long. Petals 
ovate-oblong, rounded at the tip, 6 mm long, 3 mm wide, margin 
minutely, denticulate. Labellum 12 mm long, 6 mm wide near 
the tip, simple, cuneate-obovate, sharply bent at the base to 
conform to the curved (genuflected) mentum, finely denticulate 
along the margin of the rounded, broad tip. In front of the 
column-foot the lip is dilated (nearly orbicular), then contracted 
at the point where a hippocrepiform membranaceous callus is 
situated, beyond the callus the limb is cuneate obovate, with 
three prominent longitudinal central nerves. In some flowers 
the mentum is so much curved that the blunt apex points in 
the same direction as the sepals and petals. 
Luzon, Lepanto Subprovince, Maximo Ramos, Bur. Sci. 70^9, January, 
1909. 
Dendrobium Ramosii belongs in the same section with D. O’Brienianum 
Kranzl., and D. Epidendropsis Kranzl., two Philippine species which are 
characterized by the sharply bent mentum. From both it is very distinct 
in foliage and in the color and size of the flowers. 
I have seen two other collections from the Philippines which appear to be 
referable to this species. The leaves and stems are longer than in the 
specimens gathered by Ramos, but the flowers are very similar, the lip 
varying slightly in outline. 
Luzon, Bontoc Subprovince, Banco, Father M. Vanoverbergh 9, 1,300 
meters above sea level, January 8, 1910: Benguet Subprovince, Bugias, 
Elmer D. Merrill U682, October 28, 1905. 
Dendrobium ventricosum Kranzl. in Engl. Pflanzenreich 45 (1910) 209. 
Luzon, Province of Zambales, A. Loher 600i, June 11, 1905, flowers 
greenish-yellow, with purple lines. Mindanao, Butuan Subprovince, 
Agusan River, Talacogon, C. M. Weber 176, epiphyte, flower light-green, 
July 20, 1911: District of Davao, Rev. R. F. Black, August, 1906, “flowers 
white, blue-veined inside;” from same locality. Black, 1909 
Apparently a very variable species. The material which I have examined 
would seem to indicate that the labellum varies considerably in the condition 
of the anterior margin which may be minutely and inconspicuously denticu- 
late or almost fringed. In the specimen collected by Rev. R. F. Black the 
margin of the lateral and middle lobes is lacerate-denticulate. 
My understanding of Doctor Kranzlin’s D. ventricosum is based on 
his original description; I have not seen the type. 
