144 Ames — New Species of Acoridlum fmm 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 J. leiullum 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 

 liams(No.l939). 



An interesting addition to the grass-leaved division of Euacori'l I nm, of 

 which, heretofore, A. ienellum and A. sphacelulum 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 ditler- 

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

 character which does not \\o\d\n A. tmdlum, A. aphacchihua or A. gram- 

 inifoUum, in all of wdiich 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; labehum 3-callo- 

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

 auriculatis, lobo medio oblongo, mucronato. 



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

 with yellow fragrant flowers which turn deep reddish brown wlien 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 suiiunit 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 nun. 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 tlie 

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

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

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

 calli, one at the base of each lateral lol)e. 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 oi Acoridlum tenellum Nees &, Meyen. 



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

 feet. October-November, 1905, E. D. Merrill (No. 4704) ; 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- 



