716 GRAMINES (Stapf). { Pou. 
squarrosa, Lichtenst in Roem. et Schult. cy ii. 553 and P. tenuiflora, 
eee le. 566, are evidently species of Zragrosti 
LXXXVII. ATROPIS, Griseb. 
Spikelets 2- or 3- to many-flowered, narrow, laterally compressed 
or subcylindric; rhachilla disarticulating above the glumes an 
between the valves, glabrous, produced. Gluimes broad, obtuse, 
rounded on the back, unequal, 1-3-nerved. Valves oblong, obtuse, 
rounded on the hack, rather firm below the hyaline tips, 5-nerved, 
nerves usually obscure, except in transmitted light; callus minute. 
Pales almost as long as the valves, 2-keeled. "Lodicules 2 2, ovate, 
hyaline, ro 3. Ova ary glabrous ; styles very short, distinct ; 
stigmas laterally exserted, delicate ely plumose. Grain tightly 
embraced by the hardened valve and pale, oblong, almost semiterete, 
subconcave in front ; hilum basal, punctiform ; embr yo small. 
copa rhea linear, flat, plicate or convolute ; ligules hyaline ; panic cles 
open ted ; branches usually spreading, often naked for a Sacer 2 
} aed escnanene nd and pedicels adpressed ; spikelets ans awules 
Species about 12, mainly in the temperate regions of the northern hemisphere. 
Most of them very closely allied. 
Very closely allied ig fhe from which it chiefly differs in the glumes and 
valves being not keele 
Leaves 1-14 lin. broad when expanded, more or less plicate ; 
panicles ovate to ee oo rather coarse and stiff : 
more or less ef eading bran (1) Borrer. 
agerc up to # lin. broad, a expanded, setaceously con- 
€; panicles linear with erect “ag filiform to 
hive a branches — ; (2) angusts- 
i. A. Borreri om le culms fascicled with the intravaginal 
innovation shoots, 1-11 long, suberect or geniculate below, 
$ 
b 
internode long exserted ; leaves glabrous, glaucous, somewhat thick ; 
sheaths eae lower rather broad, pallid ; ligules ovate, to almost 
4 4 tin. long, stout; spikelets more or less adpressed to the branches, 
linear- oblong to subeylindrie, 11-3 lin. long (in the South sas 
specimens), 2—4- (rarely to 7-) flowered, pallid; glumes ovate, low 
about 3 lin. long, hyaline except along the nerve, upper {-] 
long, 3-nerved, hyaline, margins broad ; valves obliquely oblong in 
profile, rather more than 1 lin. long, minutel y hairy at the very 
