150 Ames New Species of Acoridium from the Philippines. 



bene minutis, rotundatis, ad basim labelli approximatis, lobo medio magno, 

 semi-orbiculari, 3-tubercnlato. 



Pseudobulbs slender pyriform, about 2.5 cm. long. Leaves 9-14 cm. 

 long, 7-18 mm. wide, oblong-lanceolate, acuminate, acute. Petiole 4-7 cm. 

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

 mm. long. Flowers yellowish, odorless. Lateral sepals ovate-lanceolate, 

 acute, 3 mm. long, 2mm. wide. Upper sepal oblong-ovate, obtuse, or sub- 

 acute, 3 mm. long. Petals ovate-acute, 3-nerved. Lip 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. 



From between Suyoc and Panai, Prov. Benguet, Luzon, epiphyte in 

 mossy forest, alt. about 6,500 ft., November 7, 1905, Elmer D. Merrill (No. 

 4758). 



The lip although unlike those of all other species of Acoridium is of great 

 interest inasmuch as the tubercles are in character and location similar to 

 those of such species as A. pumilum and A. venustulum. In habit the 

 plant resembles A . Whitfordii and A . phili.ppinf.nse. 



Acoridium oliganthum sp. nov. 



Pseudobulbi pyriformes ; folia oblonga, sub-acuta vel obtusa, quam pe- 

 dunculo breviora ; sepala lateralia late ovata, obtusa, 3-nervia ; sepalum 

 dorsale oblongum, obtusum, 3-nervium; labellum sagittatum, 3-lobatum, 

 3-callosum, lobis lateralibus obtusis. 



A diminutive epiphyte with roundish or pyriform, rugose pseudobulbs 

 5 mm. long, 3.5 mm. thick. Leaves shortly petiolate, 1.7-2 cm. long, 3-5 

 mm. wide, sub-acute or obtuse. Peduncles longer than the leaves, flexu 

 ose, 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. 

 wide. Upper sepal oblong, broadest above the middle, obtuse, 3-nerved, 

 3-mm. long. Petals broadly cuneate-obovate, broadest above the middle, 

 3-nerved, obtuse or sub-acute, 2 mm. long, slightly more than 2 mm. wide. 

 Lip contracted-sagittate, 3-lobed, with the middle-lobe bluntly apiculate 

 or obscurely 3-lobed and the lateral lobes blunt and rounded with a large 

 truncate tubercle at the base of each near the outer margin, and on the 

 median line or disc of the lip a minute, very obscure papilla. Column 

 short, with a very prominent protuberance in front. 



From Mt. Data, Distr. Lepanto, Luzon, alt. 7,000 ft., October 29, 1905, 

 Elmer D. Merrill (No. 4481). 



In the Herbarium of the Bureau of Science at Manila this species and 

 A. ocellatum are mounted on the same sheet. Both species were collected 

 by Mr. Merrill at the same time. Only four plants were found, two of each 

 species. A. oliganthum belongs to that group of Euacoridium species which 

 have the lateral lobes of the lip much smaller than the middle lobe and 

 which merge with A. Whitfordii and A. ocellatum. 



