ORCHIDACEffi n 



f. Bonpl. 5 : 34 (1857) ; Kranzlin Orch. Gen. et Sp. 1 : 647 ; J. J. 

 Smith Orch. Java 29. 



" MECOSA. Perianthii ringentis sepala tria posteriora f orni- 

 cata ; lateralia anteriora dorsali angustiora. Labelliim basi cal- 

 caratum ; limbus indivisus, patens. Gynostemium dilatatum, 

 emarginatum. Anther ce loculis discretis, utrinque longitudinaliter 

 adnatis, basi non prominentibus. Pollinis massce granulosa?, pedi- 

 cellatse, pedicellis singulis basi glandula prseditis. Genus hinc 

 Bonateae, inde Habenariae affine, habitu prsecedentis. MECOSA 

 ANGUSTATA. M : labelli limbo lineari, calcare attenuato." — 

 Blume, I c. p. 403, 404. 



Plants 3 dm. or more high from thick, fleshy roots. Leaves 

 variable, ovate-lanceolate, acuminate, acute, 5-15 cm. long, 1-5.5 

 cm. wide, passing above into the lanceolate, clasping bracts. 

 Floral bracts exceeding, equalling, or shorter than the ovary. 

 Flowers in a loose raceme. Lateral sepals oblong, gradually 

 tapering to the obtuse tip, 5.5 mm. long, imperfectly 3-nerved. 

 Upper sepal much broader than the laterals, very obtuse at the 

 tip. Petals falcate, or half ovate, about 5 mm. long. Labellum 

 linear, about 7 mm. long, 3-nerved. Spur 1 cm. long, rather 

 stout, not clavate. Fruit an ellipsoidal capsule, 12 mm. long. — 

 A variable species in the size and shape of the leaves, which are 

 sometimes oblong-lanceolate. 



My specimens of Habenaria angustata agree with the Javan 

 specimens collected by Horsefield, and with the figure of Mecosa 

 angustata in Blume' s Tabellen. 



" Orchid with fleshy root-stock imbedded in moss on trees," 

 Lamao River, Mt. Mariveles, Prov. Bataan, Luzon, May, 1904, 

 H. N. Whltford (no. 162). — Mt. Majaijai, Luzon, Wilkes Ex- 

 pedition (1838-42), specimen in lib. Gray. 



Borneo ? Java. 



H. (§ Peristylus) G-OODYEROIDES Don Prodr. 25 (1825); 

 Sprengel Syst. Veg. 3 : 690 ; King & Pantling Orch. Sik.-Him. 



