⊙⊙ _Spikelets small and numerous, more or less elongated and pointed, not dangling: glumes and paleæ not inflated_. _Poa_ and _Festuca_ (see p. 116) are difficult genera for the beginner; several of the species vary considerably in detail. Generally speaking the spikelets of _Festuca_ are hard, harsh and sharply pointed, or with short or evident awns; in _Poa_ they are softer, and with blunter points, and never awned. The most obviously awned species of _Festuca_ have more or less setaceous leaves and contracted inflorescences (see p. 111). Some of the mountain species of _Poa_ are extremely variable in small characters. ≡ _Reed-like aquatic, with obtuse glumes rounded dorsally; the large richly branched panicle bearing numerous 5-10 flowered spikelets. Sheath entire or nearly so. No we to the paleæ._ _Glyceria aquatica_, Sm. For other reed-grasses, see note, p. 103. _Glyceria fluitans_ has a more contracted panicle and usually more flowers in the spikelet &c. (see p. 111). ≡≡ _Meadow and pasture grasses &c., usually small. Glumes more or less keeled and acute. Sheaths split_. +Poa.+ ‡ _Spikelets very small and containing 2-3 flowers only. Stem slender, terete and rough; ligule long and acute, palea with prominent lateral nerves._ _P. trivialis_, L. The flowers are fewer than in any other _Poa_, and may be only two. _P. nemoralis_, with 3-5 flowers, may also occasionally be found with two only: it differs from others in its more acute glumes, smooth stem and short ligule. _P. pratensis_ differs in its creeping stolons, short ligule and more numerous 4-5 flowers, and in the indistinct nerves of the palea. ‡‡ _Spikelets 4-6 flowered._ ≡ _Annuals, about six inches high, with relatively large and numerous spikelets for so small a panicle. No “web” at the base of the paleæ._ _P. annua_, L. This is the small grass so common as a weed on road-sides and on lawns, flowering even in winter. For other annual species of _Poa_--_P. rigida_, _P. loliacea_ and _P. procumbens_--see note p. 108 and p. 111. ≡≡ _Perennials._ Δ _With creeping stolons._ _x Stems and leaf-sheaths flattened. Panicle somewhat close and secund, some spikelets being nearly sessile._ _P. compressa_, L. _xx Stems and leaf-sheaths terete. Panicle spreading widely._ _P. pratensis_, L. ΔΔ _Without creeping stolons. Stems and panicle slender, round. A shade-plant._ _P. nemoralis_, L.