The “seed” consists of the complete spikelet, separated below the compressed and acute, keeled glumes; these have hairs on the keel, and completely enclose the two flowers and their paleæ. Palea ribless, white to grey, shining, obtuse, that of the upper (male) flower with a sub-terminal short hook-like awn. Total length about 4-5 mm. Caryopsis oblong-ovate, grooved. In its palea about 2-3 mm. long and with a few hairs at the base. ≡≡ _Awn dorsal, kneed, longer than the palea._ _Holcus mollis_, L. (Fig. 66). Palea 2·5 mm., fruit 3·1 mm. long; glumes with stiff hairs or serrulæ on keel. The seeds of _Holcus_ often fall from the glumes, but may bring them away. [Illustration: Fig. 66. _Holcus mollis._ Type of “double seed,” which really consists of the entire spikelet (_a_, nat. size; _c_ and _d_, × 8) comprised of the two glumes enclosing two pairs of paleæ and their enclosures (_b_, nat. size; _e_, × about 8). The lower pair of paleæ 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_. ⊙⊙ _Awn bent and twisted, basal or nearly so; glumes very hairy._ Δ _Glumes golden brown: one awn straight, one “kneed.”_ _Anthoxanthum odoratum._ The grass which gives the scent to new-mown hay. The “seed” is often impure, containing a continental species _A. Puelii_ and other hairy forms. [Illustration: Fig. 67. _Anthoxanthum odoratum. a_, “seed” and caryopsis, nat. size; _b_, the “seed,” and _c_, caryopsis, × about 7. The “seed” consists of the inner hairy glumes, each with a dorsal awn--one kneed--enclosing the paleæ and caryopsis. The outer pair of unawned glumes has been removed. Nobbe.] _Anthoxanthum odoratum_, L. (Fig. 67). The one-flowered spikelet has four hairy glumes, the outer pair of which are unequal and awnless: the “seed” consists of the inner pair of golden-brown hairy and dorsally awned glumes, covering the thin, membranous, shining, smooth, blunt paleæ and the caryopsis, to which the inner palea adheres. Total length, without awns, about 3-4 mm. Palea 1·6 mm. Caryopsis 1·5 mm., brown, shiny, and easily separating. One awn is short, stiff and straight and inserted above the middle of its glume; the other longer and sharply bent, inserted about the middle. _Hierochloe_, a rare northern grass, also comes here. ΔΔ _Glumes connate below, hairy on the keels._ _Alopecurus pratensis._ _A. geniculatus._ _A. agrestis._