GRAMINE. 841 
Panicle dense, cylindrical. Outer glumes compressed, 
fringed on the keel. Flowering glume hyaline, with a 
short dorsal awn. Rhachilla not produced Xs 14. ALOPECURUS. 
Panicle long, narrow and spike-like in the New Zealand 
species. Spikelets small, awnless. Flowering glume 
usually exceeding the outer glumes. Seed loose in the 
pericarp and finally expelled from it . .. 15. SPOROBOLUS. 
Spikelets panicled. Outer glumes very ‘minute. Flower- 
ing glume awnless, acuminate, pubescent. Palea almost 
as long as the glume . 16. Srmpricra. 
Spikelets small, panicled. Flowering elume hyaline, much 
smaller than the outer glumes, awned on the back or 
awnless. Palea usually short, often minute or wanting. 
Rhachilla not produced if: ee ea .. 17. AGROsTIS. 
Spikelets small, panicled. Flowering glume hyaline, 
smaller than the outer glumes or almost equalling 
them, awned on the back. Palea more than half as 
long as the flowering glume. MRbhachilla produced be- 
yond the palea, silky 18. DeyEuxia. 
Panicle Jong, narrow, dense, bristly from the long awns. 
Flowering glume hardly shorter than the outer glumes, 
with a long and fine awn from the back near the tip .. 19. DIcHELACHNE. 
TrinzE VI. AVENAL. 
Spikelets 2- or several-flowered, usually panicled. Flowering glumes 
generally shorter than the outer glumes, usually awned; awn geniculate and 
often twisted, rarely straight. 
* Awn of the flowering glumes dorsal, rising from below the terminal teeth 
of the glume, not from between them. 
Spikelets 2-flowered. Flowering glumes erose or 2- 
toothed at the tip, shortly awned .. 20. DESCHAMPSIA. 
Spikelets 2-6-flowered. Flowering glumes sharply 2- 
toothed at the tip; teeth sometimes almost awned ; awn 
from the back just below the teeth .. . 21, TRISETUM. 
Spikelets 5-10-flowered. Flowering glumes rounded at 
the back; awn dorsal, straight or bent a .. 22, AMPHIBROMUS. 
** Awn of the flowering glumes rising from between the terminal lobes or 
teeth of the glume. 
Spikelets several-flowered. Flowering glumes rounded at 
the back, often ciliate or hairy ; awn rigid, often twisted 
or flattened at the base ae 20 3¢ .. 23. DANTHONIA. 
TrisE VII. CHLORIDE A. 
Spikelets 1-many-flowered, crowded in two rows on one side of a flat 
rhachis or spike; spikes in racemes or digitate. 
Spikes digitate or scattered at the top of theculm. Spike- 
lets compressed, several-flowered, awnless. Outer glumes 
persistent ; flowering glumes deciduous a6 .. 24, ELEUSINE. 
Trise VIII. FESTUCH A. 
Spikelets 2-—many-flowered, usually panicled or racemed. Flowering 
glumes generally exceeding the outer glumes, awnless or with 1 or several 
straight awns, which are usually terminal, rarely dorsal. Rhachilla produced 
beyond the uppermost flower. 
