NEW AND EAEE SPECIES OE MALAYAN PLANTS. 203 



.strong and several less conspicuous ribs on each face, soabrid, 

 and short hairy on edges, .2 in. long. Style short, red trind 

 nut dark brown, narrow lanceolate triquetrous, narrowed ab- 

 ruptly at both ends. 



Pahang, Telom Forests at 4,000 feet (Ridley 12865). 



GRAMINEAE. 

 Isachne Kunthiana, var. denticulata, Ridl. n. var. 



Stiff plant with stout woody stems 2-5 in. tall. Leaves 

 crowded coriaceous lanceolate acuminate ribbed 1.10 in. long, 

 .2-1 in. wide, edges and back when young ciliate, after the fall 

 of the hairs minutely denticulate, sheaths ciliate, culm 4 in. 

 long, glabrous, branches of panicle 5 or 6, the lowest 1 in. 

 long. Spikelets about 9 on the lower ones shortly or not 

 pedieelled. Glumes i. and ii., lanceolate ribbed purple. 

 Glumes iii. and iv. shorter pubescent. 



Gunong Iverbau at 6,600 feet (Robinson) ; also Borneo, 

 Mt. Kinabalu 8.000 feet (Haviland) ; Cevlon, (Thwaites 

 2754). 



The ordinary form of I. Kunthiana- here is a weak slender 

 plant with thin stems soft leaves and short slender panicle of 

 very short branches, the lowest half an inch, the outer glumes 

 pubescent. This variety I take to be a mountain form of it. 

 The Kinabalu plant is intermediate in its thin elongate stems. 



Isachne javanica var. saxicola, Ridl., Fed. Mai. States Mus. 

 Journ. vi. p. 196, must I think be considered a form of Kuti- 

 thiana. It has the stiff leaves of the preceding variety but 

 almost glabrous and not toothed, the panicle is that of /. 

 Kunthiana, typical but glabrous. 



Chrysopogon collinum, Ridl. n. sp. 



3-4 feet tall. iStem fairly stout nodes glabrous, branched. 

 Leaves linear acuminate 9 in. long, .25 in. wide, glabrous 

 minutely thorn} r on nerves and edge at tip. Panicle shortly 

 protruding from uppermost leaf 3 in. long; rachis slender, 

 minutely hairy. Pedicels hairy in edge. Callus with a short 

 tuft of brownish hairs. Spikelets .25 in. long. Glume i., 

 lanceolate, narrow shortly hairy on nerves and edge, awn 

 slender about as long. Glume ii., similar, awned edges with 

 long white hairs. Glume iii., shorter very thin sparse hairy, 

 acuminate. Awn on glume iv.^ slender .75 in. long base dark 

 brown above, pale minutely sparsely pubescent. 



Setul Bukit Wang (Haniff 649). 



Allied to G. Wightianus; Nees, but the spikelets smaller 

 and altogether less hairy, the awns are under an inch long and 

 nearly glabrous, while those of C. Wightiamis are 2 inches 

 long, stout and conspicuously hairy. 



R. A. Soc, No. 82, 1920. 



