222 
CLVII. GRAMINEiE (Stapf). 
[. Andropogon . 
fine ; upper glume hyaline, oblong, truncate, about half the length 
of the lower, sub-2 -nerved, ciliolate. — A. ahyssinicus, Chiov. in Ann. 
Istit. Bot. Roma, viii. 281, partly, not R. Br. 
-f~ Nile Land. Eritrea: Amasen; At-Zien, 8200 ft., Pappi, 5285 
6. A. abyssinicus, R. Br. ex Trev. in Mus. Senlcenb. ii. (1837) 146. 
Annual, loosely tufted, up to 2 ft. high. Culms geniculate, erect, 
few-noded, simple or sparingly branched from below or the middle, 
with the branches solitary, erect and flowering, terete, glabrous, 
smooth, the internodes channelled downwards. Leaf-sheaths terete, 
loose, glabrous, smooth, shorter than the internodes ; ligules short, 
membranous, truncate, ciliolate, hairy ; blades narrowly linear, 
long-tapering to a fine point, 5-9 in. by 1J-2 lin., soft, flat, green, 
glabrous or sparingly hairy from minute tubercles, smooth ; midrib 
slender, prominent below, broader and whitish above, primary 
lateral nerves 2-3 ; subtending leaves spathaceous, subherbaceous, 
narrow, 3-6 in. long, soon convolute, with a herbaceous more or less 
reduced short blade. Peduncles filiform, up to 9 in. long. Racemes 
2- nate, one subsessile, the 4 other with a short hairy base, rather 
stout, more or less flexuous, densely whitish- villous,. 3-4 in. long ; 
joints narrowly cuneate-linear, 14 lin. long, transparent between 
the thickened edges, densely hairy on the back and sides, hairs up 
to 14 lin. long, tips on one side produced into a short membranous 
crenulate auricle ; pedicels very similar but up to more than 2 lin. 
long. Sessile spikelets oblong-lanceolate, acuminate, 3-4 lin. long 
including the callus ; callus obtuse, § lin. long, with 2 oblong trans- 
parent areoles and a beard up to 2 lin. long. Glumes subequal, 
membranous ; lower unequally minutely 2-dentate, densely hairy 
on the back, hairs 2-2J lin. long, keels with very narrow subhyaline 
wings, intracarinal nerves about 6-7, very fine, evenly distributed ; . 
upper glume narrowly boat-shaped, sparingly hairy, 3-nerved, 
ciliolate, with a bristle up to 3 lin. long from a small terminal notch. 
Lower floret reduced to a linear-oblong delicately hyaline almost 
nerveless ciliate valve. Upper floret : valve gibbous, up to over 
2 J lin. long, 2-fid to the middle, cuneat e-oblong and 3-nerved below ; 
lobes lanceolate, very acute, ciliate ; awn 8-12 lin. long, fine, flexuous, 
bent at and twisted below the middle ; valvule 0. Anthers imperfect, 
without pollen, white, J-f lin. long, on capillary filaments. Pedi- 
celled spikelet d or ^ or functionally 9 > lanceolate, acuminate, 
3 lin. long ; lower glume long-hairy on the back like that of the 
sessile spikelet, 2-mucronate, with a fine bristle up to 2J lin. long 
from between the mucros ; keels delicately winged, intracarinal 
nerves numerous, very fine and close, the middle one more marked 
than the remainder ; upper glume subhyaline, acute, aristulate, 
3- nerved, ciliate ; valve of lower floret oblong-obtuse, 2-2 J lin. long, 
