144 Ames New Species of Acoridium from the Philippines. 



largest, oblong-falcate, obtuse, with a minute callus at the base of each 

 near the sinus formed with the oblong, obtuse, middle lobe, which is 

 1 mm. long. Column much like that of A. tenellum Nees & Meyen. Fruit 

 not seen. 



Type in Herb. New York Botanical Garden, from Trinidad, Prov. Ben- 

 guet, northern Luzon, September 28, 1904 (growing on rock), R. S. Wil 

 Hams (No.1939). 



An interesting addition to the grass-leaved division of Euacoridhim, of 

 which, heretofore, A. tenellum and A. sphacelatum were the only known 

 representatives. From both of these species it is at once distinguished by 

 its stricter habit, thicker, triangular leaves, larger flowers, and very differ 

 ent lip. The flowers at the summit of the raceme begin to expand first, a 

 character which does not hold in A. tenellum, A. sphacelntum or A. gram- 

 inifolium, in all of which species the lowermost flowers are the first to bloom. 



Acoridium graminifolium sp. nov. 



Pseudobulbi fusiformes; folia linearia, acuta; pedunculi quam foliis bre- 

 viores; flores distichi ; sepala lateralia lanceolata, acuta, 3-nervia, ad apicem 

 paulo conduplicata ; petala lanceolata, acuta, 3-nervia; labellum 3-callo- 

 sum, 3-lobatum, lobis lateralibus oblongis, ad apicem latioribus, ad basim 

 auriculatis, lobo medio oblongo, mucronato. 



Affinity with A. tenellum Nees & Meyen. Tufted grass-like epiphytes, 

 with yellow fragrant flowers which turn deep reddish brown when dry. 

 Pseudobulbs stem-like, fusiform, 7-8 cm. long, strongly grooved when old, 

 clothed with elongated, tubular, maculate, acute, closely appressed sheaths, 

 the fibrous remains of which persist. Leaves grass-like, linear, promi 

 nently nerved, with a conspicuous mid-rib, at the base contracted into an 

 elongated petiole, above flat, 30 cm. long, 2.5-3 mm. wide, acute. Pedun 

 cles filamentous, shorter than the leaves, from near the summit of which 

 they appear to arise, and to the face of which they adhere lightly for a 

 part of their length. Inflorescence 4.5-5 cm. long, 8-10 mm. through, 

 bracts glumaceous, clasping the flowers, about 2 mm. long. Flowers about 

 2 mm. apart in a rather dense, distichous raceme. Lateral speals lanceo 

 late, acute, 3-nerved, slightly conduplicate at the apex, 4.5 mm. long, 2 mm. 

 wide. Upper sepal similar to the laterals, narrower, about 4 mm. long. 

 Petals lanceolate acute, 3-nerved, broadly clawed, 3 mm. long, about 1.5 mm. 

 wide. Lip 3-lobed, E-shaped; lateral lobes oblong, broadened toward the 

 end, with an auricular or rounded lobe at the base on the outer margin ; 

 middle lobe or division oblong, with a sharp inucro at the tip, with a 

 thickened, transverse ridge at the base, which passes into two truncate 

 calli, one at the base of each lateral lobe. In the depression at the center 

 of the lip is a minute callus on the median nerve. Column less than 1 mm. 

 long, stout, similar to the column of Acoridium tenellum Nees & Meyen. 



Type from between Suyoc and Panai, Prov. Benguet, Luzon, alt. 6,500 

 feet, October-November, 1905, E. D. Merrill (No. 4764) ; additional material 

 from Mt. Data, Distr. Lepanto, Luzon, November, 1905, E. D. Merrill (No. 

 4594). 



In Acoridium graminifolium we have an interesting and instructive tran- 



