Ix] “SEEDS ” 151 
Dactylis glomerata, L. (Fig. 64). 
Stiff awn-point just below the two teeth of apex of 
pale. MRachilla dilated above. Paleze 5—6 mm. long 
exclusive of point, compressed and inflated, ribbed and 
ciliate-bristly on keel, the tip incurved. Caryopsis yellow- 
brown, ellipsoid, 2 mm. 
An important grass, said to be adulterated with Lolcwm, Fescues, 
Holcus, Molinia, Bromus, &c., most of which should be readily 
detected. The curved tip is an important distinctive character. 
Cynosurus and Festuca arundinacea, F. ovina and F. rubra present 
resemblances. The seed is larger than that of Poa. 
F. ovina and F. rubra are smaller, rounded dorsally, and have no 
keel or cilia: the nerves are less prominent and the rachilla smaller. 
Sesleria coerulea, Ard. 
Palea distinctly toothed at the apex, making it almost 
three-lobed and very characteristic; with awn-point; five 
ribs, serrulate. Fruit grey-yellow, obovate. 
It is a mountain- and moor-grass of little value. 
B. “Seed” awned—i.e. the investing palea bears, or 
tapers into, a distinct bristle or hair at least as 
long as itself or nearly so. 
(a) Awn not terminal. 
(1) Awn stout, either obviously twisted and bent 
or “kneed.” 
(i) “Seed” consisting of the glumes as well as paleze 
investing the caryopsis |. 
© Aun bent but not twisted; glumes free below, 
ribbed, and with stiff short hairs on the keel. 
Awn sub-terminal, shorter than the palea, 
hooked. 
Ii 
Holcus lanatus. 
1 In cases where the ‘‘seed”’ has fallen from the glumes the sample 
will usually show some of the latter lying loose. 
