POACEAE 123 
Spikelets pedicelled, few-many-flowered, not clus- 
Panicle contracted, the numerous branches ap- 
d: spikelets minute, tawny or strami- 
l VII. GLOMERATAE. 
Panicle open, the branches spreading. VIII. PILOSAE. 
SECUNDIFLORAE 
Plant more or less tufted, the stem with a very short branch- l . 
. ing base, the spikelets in contracted or open panicles. 1. E. secundiflora. 
II. REFRACTAE 
Panicle conspicuously purple, many-fowered, Cis flowered 
toward the usually included bas 2. E. spectabilis. 
Renice plumbeous, tawny or pont (sometimes purplish in 
a reel) rather loosely few-flowered in proportion to 
Branches, branchlets, and pedicels capillary, stiff, fragile, 
t flexuous : E Rd usually more than 10- flowered, 
distinetls flatten 
Lateral spikelets eee edicelled, appressed: axils of. 
panicle-branches bearded. 3. E. refracta. 
Lateral Do on Blender spreading pedicels: axils 
ally not 4. E. Elliott. 
Branches, branchlets, and Da flexuous : spikelets flat 
r turgid, less than 10-flowered. 
Leaf-blades strongly papillose-villous, 5. E. trichocolea. 
Leaf-blades not villou 
Stems mostly less ‘than 50 cm. tall: sheaths gla- 
brous, e Rene on margins: blades folded or invo- 
lute, s 6. E. lugens. 
Stems moy more than 50 cm. tall: sheaths hir- 
sute: blades flat, elongate. 7. E. hirsuta. 
III. BAHIENSES 
Plant with a stout tufted base, narrow erect leaves, and 
numerous spikelets in a narrow panicle. 8. E. bahiensis. 
IV. HYPNOIDES 
Plant extensively branching and creeping; forming a carpet, 
E: Sp MS borne in numerous open or compact small 
icles 9. E. hypnoides. 
V. CILIARES 
Lemmas 1 mm. long: hairs on palea 0.5 mm. long. 10. E. ciliaris. 
Lemmas 0.7 mm. long: hairs on palea 0.2-0.3 mm. long. 11. ZL. amabilis. 
Plant low, in dense tufts, very leafy at the base, the short 
panicle-branches spreading or reflexed, the spikelets rela- 
tively large. 2. E. simplex. 
VII. GLOMERATA 
Plant tall, more or less branched at the base, Su flat leaf- 
blades and plume-like panicles with numerous minute spike- 
Jets. 3. E. glomerata. 
VIII. PILOSAE 
Spikelets mostly not over 5-flowered. 
lant e dan branched from "he base: panicle diffuse, pale 
or : pedicels mostly over 5 mm. lon 14. E. capillaris. 
Plant e. or spreading, branched A Um the base: 
panicle oblong, the branchlets rather crowded, usually 
purple: pedicels usually less than 5 mm. long. - 15. E. Prank. 
Spikelets mostly more than 5-flowere 
Spik = ovate to oblong, many-flo wered, more than 3 mm. 
e, the Pos elosely imbricate. 
Florets nearly horizontal, not glandular 16. E. unioloides. 
Florets ascending: lemmas glandular on the keel. 17. E. cilianensis. 
Spikelets ative distant not over 2 mm. wide, the florets 
istan 
spikele sim mm. wide: branches of panicle more or less 
us. 18. E. pilosa. 
spikelets 1.5 mm. wide or more: axils of panicle- 
branches usually not pilose. 
