204 
-f 
clvii. GRAMiNEiE (Stapf). [Schizachyrium . 
17. S. Kelleri K Stapf. A shrublet ; main stems more or less pros- 
trate or ascending, the branches repeatedly divided, producing 
dense fascicles of very slender culms up to over 1 ft. high. Culms 
more or less geniculate, few-noded, filiform, glabrous and smooth. 
Leaf-sheaths glabrous, the lower very firm, persistent, turning 
blackish, of the culms pale, all terete and tight ; ligules reduced to 
a short minutely ciliolate rim ; blades linear, tapering to a fine 
point, J--2J in. long, up to 1 lin. wide, flat, somewhat rigid, often 
twisted, glabrous, smooth, pale reddish, nerves very fine ; spathes 
very narrow, cylindric, f to over 1 in. long, usually with a very short 
blade ; peduncles filiform, erect, 1J-2J in. long, exserted, tips cupular, 
with a minutely denticulate margin and a tuft of hairs about 2 lin. 
long. Racemes § to over 1 in. long, dense, silky- villous, 4-6- jointed ; 
joints IJ-lf lin. long, slender, slightly thickened upwards with an 
obliquely cupular appendage, densely ciliate along both sides and on 
the back above the middle, the longest hairs up to 2f lin. long ; 
pedicels very similar, more slender, mostly glabrous all over the back. 
Sessile spikelet linear-lanceolate, 2J-3 lin. long (including the very 
short minutely bearded callus). Glumes subequal ; lower char- 
taceous, except at the membranous tips, acute or very shortly 2- 
mucronate, slightly concave on the back, indexed margins narrow, 
keels asperulous above, margins sparingly ciliolate upwards ; upper 
glume oblong-lanceolate in profile, mucronate, membranous, 3-nerved, 
densely ciliolate upwards. Lower floret reduced to a hyaline linear- 
oblong more or less acute nerveless upwards ciliolate valve, 2 lin. 
long. Upper floret ? : valve linear-oblong, 2-fid for a quarter of 
its length, 3-nerved at the base, awn 7-8 lin. long, kneed at and 
twisted below the upper third ; valvule, very minute, scale-like, 
hyaline, ciliate from the top. Pedicelled spikelet similar to the 
sessile but rather narrower. Lower glume 6-7 -nerved ; upper 3- to 
sub-5-nerved. Florets similar to those of the sessile spikelet, but 
the upper entire, awnless, 1 -nerved, with a $ flower. Anthers 
1 lin. long. — Andropogon Kelleri, Hack, in Mem. Herb. Boiss. No. 20 
(1900), 6 ; Stapf in Kew Bulletin, No. 6 (1907), 209. 
Nile Land. 
Keller, 129. 
brandt, 874 ! 
Somaliland : Tuju Steppe, Keller , 1 356 ! Ogaden Steppe, 
Haud ; Kirrit, Drake- Brockman, 497 ! Ahl Mountains, Ililde- 
^ 18. S. rupestre* Stapf. Perennial. Culms erect or ascending, 
1J ft. high, much branched below, lower and intermediate branches 
mostly vegetative, with a few flowering ones rising from among them, 
many-noded, wiry, compressed below, terete above, quite glabrous 
and smooth, internodes shortly exserted or the lower enclosed. 
Leaf-sheaths tight, the lower compressed, keeled, dark brown, more 
or less hirsute, the upper terete and usually glabrous with the excep- 
tion of loose hairs upwards and a beard at the mouth, finely striate ; 
ligules very short, truncate, scarious ; blades folded or sometimes 
