268 
W. O. Howarth. 
otherwise as in grandiflora ; ligule slightly bilobed ; lamina making 
a small angle with the shoot axis, dark glaucous green having the 
appearance of a “bloom,” complicate, length 25 cm., broadest diam- 
when closed 0'8 mm., therefore more slender than in grandiflora, 
rather lax, 5 longitudinal ridges, 5—7 vascular bundles, 5—7 small 
strands of sclerenchyma below abaxial surface, absent from adaxial 
surface. 
Cauline leaves 2—3; sheath split, quite smooth, only two-thirds 
length of internode, base swollen, green; ligule with lower (sheath) 
lobe raised into a definite auricle; lamina, usually shorter than its 
sheath, highest with 5—7 vascular bundles and 7—9 strands of 
sclerenchyma abaxially, flat or canaliculate. 
Haulm, shorter and more slender than in grandiflora ; length 
(including panicle) 52 cm.; diam. varies between 1*0 and 0‘8 mm., 
upper half naked, almost cylindrical, but 10 slight longitudinal ridges, 
more apparent when dry. 
Panicle subsecund, erect, total length 9 cm., much smaller 
than in grandiflora , somewhat dense, open during anthesis; lower 
rhachillae paired, unequal, short-stalked, not widely separated, 
internodes flanked with upwardly directed hairs, slightly prickly to 
the touch. 
Spikelets large, 12 mm. long, green or slightly violaceous, 2 
basal sterile glumes and 5—7 (occasionally 8) flowering glumes; 
axis jointed. Sterile glumes ^as in grandiflora. Fertile glumes, 
lower mucronate, upper becoming aristate, awns 2'5 mm. long, 
narrowly lanceolate, 5—7 mm. long excluding awn. Palea superior, 
apex somewhat hispid. Lodicules 2, not so swollen below, 
unequally forked above, with acute apices. Stamens 3. Ovary 
ovoid. Caryopsis enclosed with persistent and closely adherent 
paleae with portion of axis attached; 3 mm. long, 1 mm. broad, 
pericarp brown, with pronounced posterior furrow. Comes true 
from seed. 
Inaccordance with the Vienna rulesadiagnosis isgivenin Latin : 
Subvar. tenuifolia (subv. nov.). 
Elatior; folia innovationum mollia, setacea (0-8 mm. diam.), 
obscure glauco-viridia; vaginae hispidulae. Panicula densiuscula 
(9 c.m. lg.). Spiculae magnae (12 mm. lg.); glumae fertiles 5—7 
mm. lg., brevitus-longius aristatae. 
C. Subvar. glaucescens. 
Stock perennial, fairly densely caespitose. Extravaginal 
branches equal to intravaginal ones ; the former may creep to a 
