GRAMINE.E. 



57 



species, the outer glumes are quite glabrous, and the flowering glume and palea 

 of the sessile lower sterile flower are membranous and quite glabrous, while 

 those of the stalked upper fertile flower are coriaceous and densely hirsute. 



2. Isachne arisanensis HAYATA sp. nov. (Fig. 29). Rhizoma igno- 

 tum. Caulis 60 cm. longus gracillimus simplex haud ramosus glaber basi 

 procumbens ad nodos radicans, internodiis 5-6 cm. longis. Folia tota caulina 

 patentissima recta, vaginis 3-3^ cm. longis latere uno fissis margine ciliatis, 

 ligulis e pilis rectis 2 mm. longis constitutis, laminis lanceolato-linearibus 

 5-10 cm. longis 5-7 mm. latis apice acuminatis basi plus minus contractis ad 

 2 mm. contractis margine scaberulis utraque pagine glabris. Panicula laxa 

 pyramidalis 9 cm. longa 



totiusque lata apice acuta, 



ramis et ramulis gracil- 



limis glabris plus minus 



crispatis laxe speculiferis, 



pedicellis 5-10 mm. longis 



glabris supra glumas in- 



feriores articulatis. Spicu- 



la? late obconica? 1^ mm. 



longa? 1^ mm. lata? 2-florifera3 ; gluma3 I. et II. inferiores vacua? oblonga? sub- 



eequales 1^ mm. longa? 3-5-nervia? glabra? ; gl. III. et IV. floriferas subaaquales 



1^ mm. longa? valde concava? cum palea indurata? apice acuta? ; Palea? 



oblonga? 1 mm. longa? dorso pi ana? margine interiore plicata? glabra?. 



HAB. Arisan: Mingetsu, locis umbrosis 7000 ped. alt., April. 1916. 

 leg. B. HAYATA. 



Near /. australis R. BR., but differs from it by the much taller and 

 slenderer form with very much spreading panicles and smaller spikelets. 

 The leaves are much larger measuring 10 to 15 cm. in length. 



3. Isachne australis R. Br.; MATSUM. et HAYATA Enum. PI. Formos. 

 p. 499. 



Isachne Clarkei HAYATA Fl. Mont. Formos. p. 234, (non HOOK. f.). 



4. Isachne firmula BUSE; HEMSLEY Ind. Fl. Sin. III. p. 322. 

 Isachne myosotis NEES. var. nudiglumis HACK.; MATSUM. et HAYATA 



Fig. 29, Isachne arisanensis HAYATA ; a, a spikelet ; 

 b, glume II.; c, glume III.; il, a palea; e, a pistil. 



