98 ORCHIDACEM 



20. D. TURPE Ames supra, p. 12, t. 23. — Acoridium turpe 

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



Pscudohidbs slender, pyriform, about 2.5 cm. long. Leaves 

 9-14 cm. long, 7-18 mm. wide, oblong-lanceolate, acuminate, 

 acute. Petiole 4r-7 cm. long. Peduncle below inflorescence 

 shorter than the leaves, flexuose. Bracts glumaceous, 3-4 mm. 

 long. Flowers yellowish, odorless. Lateral sepals ovate-lanceo- 

 late, acute, 3 mm. long, 2 mm. wide. Upper sepal oblong-ovate, 

 obtuse or subacute, 3 mm. long. Petals ovate-acute, 3-nerved. 

 Labellwn 3-lobed ; lateral lobes minute, rounded, basal ; middle 

 lobe relatively very long, 2 mm. wide, semi-orbicular, about 1 mm. 

 long, trituberculate, with a tubercle on each side at base near the 

 sinus formed by the lateral lobes and with a papillate tubercle 

 between them. Column stout. 



The lip, although unlike that of every other species of the 

 section Acoridium, is of great interest inasmuch as the tubercles 

 are in character and location similar to those of such sj>ecies as 

 D. pumilum and D. venustulum. In habit the plant resembles 

 D. Whitfordii and D. philippinense. 



Epiphyte in mossy forest, alt. about 6500 ft., between Suyoc 

 and Pauai, Prov. Benguet, Luzon, November 7, 1905, E. D. 

 Merrill (no. 4758). 



Endemic. 



21. D. OLIG-ANTHUM Ames supra, p. 12, t. 23. — Acoridium 

 oliganthum Ames Proc. Biol. Soc. Wash. 19: 150 (1906). 



A diminutive epiphyte with roundish or pyriform, rugose pseudo- 

 bulbs 5 mm. long, 3.5 mm. thick. Leaves shortly petiolate, 1.7-2 

 cm. long, 3-5 mm. wide, subacute or obtuse. Peduncles below 

 raceme longer than the leaves, flexuose, filiform, few-flowered. 

 Bracts about 2 mm. long, exceeding the ovaries. Flowers small, 

 brownish red, orange when dry. Lateral sepals broadly ovate or 

 orbicular-ovate, obtuse, 3-nerved, 2 mm. long, by about 2 mm. 



