334 GRAMINEH (Stapf). [ Andropogon. 
X. ANDROPOGON, Linn. 
Spikelets similar or i igi -nate (one sessile, the other 
reduced to an empty valve; upper ¢ in the sessile, ¢& or barren, or 
quite suppressed in the pedicelled spikelet. Glumes equal or sub- 
equal; lower coriaceous to subchartaceous, 2-keeled, muticous ; 
upper usually less firm, with a median keel, muticous, rarely with a 
terminal bristle. Valves hyaline, the upper at least so at the base, 
and usually awned. fale various or 0. Lodicules 2, cuneate. 
tamens 3-1. Stigmas laterally exserted. Grain various 
a 3: or annual, of rid varied habit 
TRIB, Over 200 specie the warm parts of the world, 
The genus, as defined b Hacks! er ieiind - very heterogeneous <n and IT 
have no doubt that several of t e old genera of which it is ma are will have to 
i restored, as for instance, Ch = opogon, C By abet ogon Vand ver pogon. How- 
ver, I am not yet ready to define the genus An me oy cm rictiore) in a 
natin tory manner, and hibetore prefer to follow Hackel for the nares in this 
respect. 
Ais pinata Bessile spikelets of all the pairs alike in 
x ani 
Heaseeate peat a terminal on the culms and their 
pa often in spurious leafy or spathaceous 
Subgenus I. Scuizacuyrtum. Joints of the rhachis 
tout, tips copula with toothed margins ; upp 
valve deeply bifid (1) hirtiflorus. 
Subgenus II. Hyp POGYNIUM. Joints of the rhachis 
filiform, a rete upper valve entire, or very 
minutely 2-toothed .. (2) ceresieformis. 
**Racemes 2-nate, aigtinte’t or panicled, terminal on the 
culms — oat branches 
Subgenu ; henaacaeie. Lateral racemes 
sessi 
Pediat vO aa poner racemes silvery 
(3) eucomus. 
Peaivaled ‘ke elets $ (in the South African 
gs bel. rarely ba barr 
sem glu rsally sctcabs or grooved ; 
si 
Lower glume uals poses not teeta (4) appendiculatus. 
Lower glume with a w groove corre- 
wded 
ear i e base, blades ner a canoe (5) schirensis. 
2 e and 
er 
a ta ace eer blades 2 31 lin. 
roa (6) Schinzii. 
Blades rounded or subcordate and sub- 
amplexicaul at the base (7) amplectens. 
Blades filiform; _pedicelled ‘spikelets 
6-Slin. long... ...  ... 6 (8) filifolius. 
