Ix] “ SEEDS” 153 
== Awn dorsal, kneed, longer than the palea. 
Holcus mollis, L. (Fig. 66). 
Palea 2°5mm., fruit 3°1mm. long; glumes with stiff 
hairs or serrule on keel. 
The seeds of Holcus often fall from the glumes, but 
may bring them away. 
Fig. 66. Holcus mollis. Type of ‘‘double seed,” which really consists 
of the entire spikelet (a, nat. size; c and d, x8) comprised of the 
two glumes enclosing two pairs of palew and their enclosures 
(b, nat. size; e, xabout 8). The lower pair of palee are devoid 
of awns and enclose the caryopsis: the upper pair have stamens 
only, and the outer palea has a dorsal kneed awn, not twisted or 
hooked. Nobbe. 
Holcus is of little use. The two-flowered spikelets and peculiar 
awns sufficiently distinguish it among the smaller forms. It is said 
to occur as an adulterant in “seed” of Alopecurus. 
