ORCHIDACEM 97 



far the largest species of this group now known. The elongated 

 pseudobulbs and comparatively short peduncle, which is many times 

 shorter than the mature leaves, distinguish the species very well. 



Epiphytic, odorless, in dense mossy thickets on exposed ridges, 

 at an elevation of 8000 ft. on Mt. Halcon, Mindoro, November 

 20, 1906, E. D. Merrill (no. 5813). 



19. D. PHILIPPINENSE Ames supra, p. 12, t. 23. — Acori- 

 dium philippinense Ames Proc. Biol. Soc. Wash. 19 : 149 (1906). 



Pseudobulbs 2 cm. long, somewhat pyriform, monophyllous. 

 Sheaths inflated, nigropunctate when dry, round, acute at the apex. 

 Petiole 5-6 cm. long, slender. Leaf oblong-lanceolate, acute, 

 strongly 5-nerved, 8.5-11 cm. long, 16-23 mm. wide, broadest 

 above the middle. Peduncle below inflorescence shorter than 

 the petiole and leaf, or longer, 12-16 cm. long, slender. Inflores- 

 cence 5-10 cm. long, 1 cm. through. Flowers in a dense raceme, 

 about 2 mm. apart. Bracts glumaceous, longer than the ovary, 

 2.5 mm. long. Flowers bright yellow, emitting an odor which 

 recalls the smell of freshly sawed pine lumber. Lateral sepals 

 oblong-lanceolate, acute, 4.5 mm. long, 2 mm. wide, 3-nerved. 

 Upper sepal similar, narrower, 4.5 mm. long. Petals rhombic-ovate, 

 acute, 3-nerved, 3.5 mm. long, 2.5 mm. wide. Labellum 3-lobed, 

 lateral lobes linear-crescent-shaped, obtuse, erect, 1 mm. long, much 

 narrower than the broad oblong-lingulate middle lobe, which istrul- 

 lif orm when not flattened out, blunt at the apex, and thickened at 

 the base. Column exalate, 9 mm. long, stout, fleshy ; apex rounded. 



This very distinct species belongs to a group of odd forms which 

 appear to have equal affinity with the sections Platyclinis and 

 Acoridium. 



Epiphyte, alt. about 6500 ft., between Suyoc and Pauai, Prov. 

 Benguet, Luzon, November 7, 1905, E. D. Merrill (no. 4757). 

 — Flowers white, alt. 1600 m., trail to Balbalassan, Distr. Lepanto, 

 Luzon, November 19, 1906, W. Klemme (no. 5725). 



Endemic. 



