148 Ames New Species of Acoridium from the Philippines. 



From between Suyoc and Panai, Prov. Benguet, Luzon, October-Novem 

 ber, 1905, E. D. Merrill (No. 4854). 



This very distinct species is distinguished from its near allies, A.tenue 

 and A. parvulum, by the very narrow 1-nerved petals, by its strict, almost 

 rigid habit, and by its acute leaves. 



Acoridium anfractum sp. nov. 



Pseudobulbi oblongi ; folia oblonga, acuta vel obtusa, apiculata; pedunculi 

 quam foliis longiores ; rachis anfracta ; sepala lateralia lanceolata, acuta, 

 3-nervia ; sepalum dorsale elliptico-oblongum ; petala obvata, 3-nervia, ad 

 apicem margine erosa ; labellum 3-lobatum, lobis lateralibus ad apicem re- 

 flexis, lobo medio retuso, mucronato. 



Pseudobulbs oblong, 1-3 cm. long, when immature clothed with densely 

 maculate sheaths. Leaves 6-7 cm. long, 7-9 mm. wide, prominently 3- 

 nerved, acute or obtuse, apiculate. Petioles, about 1 cm. long. Peduncle 

 longer than the leaf, with several closely imbricating bracts below the in 

 florescence. Bracts ovate from a broad base, entire, 6 mm. long, longer 

 than the ovary. Rachis of the inflorescence strongly zig-zag, each internode 

 forming a right-angle with its subtending bract. Flowers 8-9, large for the 

 section, 5-6 mm. apart, brownish-red in a loose raceme. Lateral sepals 6 

 mm. long, 3 mm. wide, lanceolate, acute, 3-nerved. Upper sepal elliptic- 

 oblong, 6 mm. long, 3 mm. wide. Petals obovate, 5.5 mm. long, 4 mm. 

 wide, somewhat erose on the margin near the tip, 3-nerved, the lateral 

 nerves branched. Lip 4 mm. wide, 3-lobed. Lateral lobes 2.5 mm. long, 

 apex acute, reflexed. Middle lobe retuse-mucronate, acute; margin on 

 each side of the mucro thickened into callus-like protuberances, from each 

 of which a conspicuous vein runs back to the tuberculate or emarginate 

 calli situated one on each side of the disc near the base. Column stout, 

 apex behind the anther crenulate. 



From Mt. Data, Distr. Lepanto, Luzon, alt. 7,000 ft., epiphyte, October 20, 

 1905, Elmer D. Merril (No. 4482). 



Acoridium anfractum is most nearly allied to A. pumilum Rolfe, from 

 which it differs in the outline and calli of the lip, in the venation of the 

 petals, and in the very conspicuously zig-zag rachis of the larger-flowered 

 raceme. 



Acoridium recurvum sp. nov. 



Pseudobulbi recurvati, fusiformes ; folia lineari-oblonga, acuminata, 

 apiculata; flores distichi ; sepala ovata, obtusa, 3-nervia; sepalum dorsale 

 elliptico-oblongum, obtusum ; petala obovato-suborbiculata, 3-nervia; la 

 bellum 3-callosum, 3-lobatum, lobis lateralibus falcatis, obtusis, lobo medio 

 quadrate, ad angulos rotundato, at apicem dente sive mucrone instructo. 



Epiphytes apparently pendulous, with elongated fusiform recurved 

 pseudobulbs. Pseudobulbs 3-4 cm. long, about 3 mm. in diameter, clothed 

 by nigro-punctate, loose sheaths. Leaves linear-oblong, acuminate, apic 

 ulate, many-nerved, 10-12 cm. long, 10-14 mm. wide. Petioles slender, 18 

 mm. long. Peduncles shorter than the leaves. Racemes 2.5-4 cm. long, 

 rather loosely flowered. Bracts 3 mm. long, longer than the ovary. 

 Flowers 10-13 or more, 3 mm. apart, rather fleshy, 6 mm. across when 



