Ix] “ SEEDS ” 149 
Keeleria cristata, Pers. (Fig. 62). 
Palea 6 mm., keeled, entire, no awn but stiffly tapering, 
ribbed, no hairs. Rachilla large. Fruit 45 mm. 
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Fig. 61. Molinia cerulea. a, Fig. 62. Keleria cristata. a, 
‘“‘seed,” nat. size; b and c, the ‘‘seed” (to the left) and 
ditto, x about 8; d, the cary- 
opsis, nat. size; e, ditto, x about 
7. Note the compressed, keeled 
caryopsis (to the right), nat. 
size; b, ‘“‘seed,” x about 7. 
The palea is compressed and 
keeled, and, like the large 
rachilla, glabrous. Nobbe. 
and glabrous palea, and the 
long slender bone-shaped ra- 
chilla. Nobbe. 
** Palea not taper pointed, but mucronate, or two- 
toothed, with a sub-terminal point or spine. 
Elymus arenarius. 
Agropyrum repens. 
Dactylis glomerata. 
Sesleria coerulea. 
Elymus arenarius, L. (Fig. 63). 
Fruiting palea lanceolate, 13—15 x 3 mm., tough and 
stiffly hairy or velvety: 5—7 ribs. Rachilla stout, hairy. 
Fruit hairy above, 5 —11 mm. x 2°5 x 1:2, somewhat grooved. 
