307 
Fruiting valve obtuse, 
abruptly mucronate or 
aristulate ; inflorescence 
without bristles - VI. Urochloa. 
Glumes caudate, or cuspidate 
acuminate, or awned.; margins 
of the fruiting valve flat 
upwards, not qspbraning the... : 
- tip of the valvule _ VII. Echinochloa. 
Racemes disarticulating at che 
base from the main axis and 
falling off with the spikelets _.- VIII. Paractaenum. 
Inflorescence an open panicle. o 
contracted and spikelike : 
Spikelets not gibbous; inflor- 
escence an.open icle : 
Fertile floret without any basal 
appendages IX. Panicum. 
Fertile floret is basal append: 
agesin front - X. Ichnanthus. 
Spikelets gibbous : 
Spikelets in panicles; fertile 
floret laterally much compressed XI. Cyrtococcum. 
tinctly laterally compressed - XII. Sacciolepis. 
**Fruiting valve membranous; inflor- oid 
escence a dense acne again and often 
spikelike panicle - XIII. i weemrrene 
Fertile floret distinctly villous or ee 
cartilaginous or err wase ous erie aes 
ENUMERATION. 
(A mark ! denotes the type of the Species.) 
I. Alloteropsis Presl...emend.. Hitche.. in Contrib. U. 8. Nat. 
Herb. xii. 210 (1909). 
. semialata (R. Br.) Hitche.1.c.; Panicum semialatum R. Br. 
Prod. 192 (1810); Benth. Fl. Austral. vii. 472; P. viaticum 
Griff. Ic. Pl. As. t. 145 (1851), f. 2; Urochloa semialata Kunth. 
Rev. Gram. i. 31 (1839); Oplismenus semialatus Desv. Opusc. 81 
(1831); Coridochloa semialatus Nees in Edinb. New Phil. Journ. 
xv, 31 (1833); Aira viatica Griff. Not. iii. 54 (1851); Holosetum 
philippicum Steud. Syn. Pl. Glum. 118 (1854); _ Arundinella 
Schultzii Benth. Fl. Austral. vii. 545 (1878). 
W. Ausrratia: Escape Cliffs, Hulse. 
; IToRY: Victoria River, Mueller; Port.) Darwin, 
Schultz 31, ” 662, 784, 801; near Darwin, Allen 10, 47,,70, 162, 
Ag 
