56 GRAMINEA& 
16. Nit-grass (Gastridium).—Spikelets similar to those of Agrostis, but in 
a closer, more slender panicle ; outer glumes swollen at the base, shining, and 
somewhat hardened ; flowering glume minute, glassy, toothed. Name from 
the Greek gustridion, a ventricle. 10. 
17. Silky Bent-grass (4pera).—Annual grasses, with small, shining, 
1-flowered spikelets, panicled ; rachilla produced beyond the flowering glume ; 
empty glumes 2, unequal, keeled; flowering glume shorter, with a slender, | 
wavy, dorsal awn. Name from the Greek aperos, undivided, having reference 
to the flowering glume. 14 (Agrostis). 
18. Deyeux’s Small-reed (Deyeizia).—Similar to Culamogrostis, but 
having the rachilla prolonged into a bristle that is usually hairy. Named 
after N. Deyeux, a French chemist. 13 (Calamogrostis). 
19. Sea-reed, or Marram-grass (4Amméphila).—Panicle contracted, 
dense ; spikelets large, laterally compressed, 1-flowered ; empty glumes 2, 
nearly equal, scarcely larger than the rigid flowering glume, which is 5-nerved, 
and has a tuft of silky hairs at its base ; awn minute, near the tip of glume. 
Name from the Greek ammos, sand, and philo, lover, in allusion to its 
habitat. ' 6. 
20. Hare’s-tail-grass (Lagiirus)._Spikelets in a dense egg-shaped 
head ; empty glumes 2, equal, larger than the flowering glume, ending in 
long feathery points, which give a soft furry aspect to the head; flowering 
glume shortly stalked, with a long bent and twisted awn and two shorter 
ones. Name from the Greek lagos, a hare, and owra, a tail. 8. 
Tribe VI. AVENE&.— Spikelets panicled, flowers 2 or more, the rachilla 
produced beyond the upper flower; flowering glume with 2 lobes or teeth, 
between which or on the back is a twisted awn. In Aira, however, the 
rachilla is not produced. 
21. Hair-grass (Aira).—Spikelets laterally compressed, in a loose 
panicle, small, 2-flowered, the rachilla not produced ; flowering glumes with 
dorsal awn. Name Greek (from airo, to destroy), applied to some species of 
grass. 16; 
22. Club-grass (Corynéphorus).—Spikelets panicled, small, 2-flowered ; 
rachilla produced ; empty glumes 2; flowering glume glassy, awn dorsal, 
bent, twisted below the joint, which is bearded, tip thickened, club-like. 
Name from the Greek koryne, a club, and phero, to bear. 16 (Aira). 
23. Tussock-grass (Deschdmpsia).—Spikelets panicled, 2-flowered ; 
rachilla produced, sometimes bearing an imperfect flower; empty glumes 
keeled, shiny, toothed, 3—5-nerved; awn dorsal. Named in honour of 
M. Deschamps, a French chemist. 16 (dira). 
24. Soft-grass (Hdlcus).—Similar to Deschampsia, but with the upper 
flower of each spikelet imperfect (staminate) and awned, whilst the lower is 
perfect and unawned. Name Greek, but of uncertain meaning. 19. 
25. Three-awned-grass (J'risétum).—Spikelets compressed, borne in 
an open panicle, 2-—6-flowered ;  rachilla produced, sometimes with an 
imperfect flower ; empty glumes unequal, keeled ; flowering glumes shorter, 
ending in a 2-awned point, and with a long, twisted, dorsal awn. Name 
from the Latin /ri, three, and seta, bristles. 33 (Avena). 
