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spikelet is oblique, the inner side being 1 line broad with 6 green 

 anastomosing veins, and the outer nearly f line with two stronger 

 and two intermediate finer green veins ; the keel bears in the upper 

 third of its length a white membranous wing with a scabrid 

 margin. 



Gunong Leydang (Mt. Ophir). Nov. Growing on rock of 

 Padang Batu. 



Allied to the group of Australian and tropical Asiatic species, 

 which comprises I. muticum, triticeuw, coistralr, and arii>bliii«c<<u»> : 

 its perfect awn separates it from the three first, while it differs 

 from arundinaceum in its leaf-characters, as well as in the more 

 minute details of the spikelet. 



Ischaemum magnum, sp. nov. — Planta robusta, sexpedalis, 

 culmis erectis, superne modo ramosis, teretibus, lsevibus, sub nodis 

 glabris constrictis ; vaginis internodos superantibus, quani laminae 



1- duplo brevioribus, teretibus, superne carinatis et laxis, basi glabris, 



■ . 



longis, patentibus, inferne angustatis, plicatis et carinatis, turn 

 sensim lineari-lanceolatis et planis, demum setaceo-acuminatis, 

 supra glabris, infra sparse pilosis, costa media albo-lineata, utrinque 

 nervis lateralibus sex vel pluribus dorso prominulis percursis; 

 racemis crassis, binis, arete appressis, culmum et ramos termi- 

 nantibus, altero sessili, altero breviter pedicellato ; articulis pedi- 

 cellisque crassiusculis angulos tres acutos, quorum exteriori modo 

 ciliolato, exhibentibus ; illis quam spicula his 3-plo, brevioribus; 

 spkula sessili oblonga, inferne fiavescente, superne viridi ; glumis 

 glabris, Ima late lanceolata, inferne coriacea et dorso rugis trans- 

 versalibus elevatis ornata, superne membranaceo-herbacea et nervis 

 3-5 viridibus anastomosantibus subindistincte notata, apice oblique 

 obtusa, marginibus inferne revolutis, superne carinatis et sca- 

 bridulis, carina exteriori (a spic. pedic. aversa) anguste alata; callo 

 brevibarbi ; Ilda lam subsequante, coriacea, dorso acute carinata, 

 marginibus incurvatis superne anguste carinatis, sub apice apiculata 

 minute scabridula ; Illia Ima breviori, hyalina, late lanceolata, 

 acuta, trinervia, margine implicata paleam subsimilem cum flore 

 3-andro fovente ; IVta hac breviori, ovata, hyalina, integra, tenuiter 

 apiculata, trinervia paleam tenuem cum ovario fovente ; antheris 

 sub If lineis longis ; sp. pedic. sessili £ breviori, gl. Ima oblique 

 convoluta, margine utrinque carinata, exteriori ala viridi-mem- 

 branacea, carinam superfusa, interiori nodulis tribus plus minusve 

 distincte ornata ; reliqua ut in sp. sess. 



A coarse robust plant 75 inches high, unbranched for three* 

 fifths of its length, the few long slender branches terminated by the 

 paired subcompound racemes, 4-7 in. long, which are so closely 

 appressed as to appear single. The terete polished internodes are 

 covered by the longer sheaths, which, however, become laxer above; 

 the sheaths are glabrous at the base, but increasingly scabrid and 

 villous upwards ; the ligule is strong and almost villous externally, 



2- 3 lines long, and forms laterally two triangular elongations of the 

 sheath ; the long blades are flat and lanceolate from a narrow 

 plicate base and taper to an acuminate setaceous apex ; below the 



