. California grasslands and range forage grasses. Grasses; Forage plants. or less flattened and wider; culms mostly 30-50 cm tall. Throughout the high Sierra Nevada 6. P. epilis Spikelets little compressed, 6-8 mm, the lemmas rounded dorsally, the keel ob- scure. A tall meadow grass of the Great Basin 10. P. nevadensis Lemmas more or less hairy on back, keel or nerves, at least towards base (sometimes obscurely so and occasionally nearly gla- brous in P. scabreila) Spikelets compressed; lemmas keeled, very broad and rounded, villous on keel and marginal nerves. South and east of the Sierras 3.
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. California grasslands and range forage grasses. Grasses; Forage plants. or less flattened and wider; culms mostly 30-50 cm tall. Throughout the high Sierra Nevada 6. P. epilis Spikelets little compressed, 6-8 mm, the lemmas rounded dorsally, the keel ob- scure. A tall meadow grass of the Great Basin 10. P. nevadensis Lemmas more or less hairy on back, keel or nerves, at least towards base (sometimes obscurely so and occasionally nearly gla- brous in P. scabreila) Spikelets compressed; lemmas keeled, very broad and rounded, villous on keel and marginal nerves. South and east of the Sierras 3. P. fendleriana Spikelets little compressed, the lemmas rounded on back, crisp-puberulent to- wards base, the keel obscure Spring-flowering and more or less ephemeral, summer-dormant; low ele- vations up to 5000 ft or more; wide- spread 4. P. scabreila Summer-flowering and summer-active; montane to high alpine, mostly above 7000 ft 9. P. gracillima Perennial Bluegrasses 1. KENTUCKY BLUEGRASS (Poa praten- sis) at its best forms a complete sod, but usually grows in small patches, close to- gether or distant, among other vegeta- tion; it is 1-3 ft (30-90 cm) tall, the foliage soft and long; panicle open, the spikelets clustered towards the ends of the branches, the lower branches in a fascicle of five. (Fig. 31.) Distribution and habitat: Although originally introduced from England, Kentucky bluegrass has become so wide- spread and abundant in some sections of the country that it is commonly regarded as a native. Stands in California are con- fined to northern coastal areas or cool mountain regions up to 10, 000 ft. It will grow on a wide diversity of sites, but does best on well-drained loams rich in humus. Accordingly, this grass is found on the more productive mountain soils and moist sites, occurring in meadows, along streams, and in open and semi- shaded benchlands. Forage value and reproduction: Ken-. Fig. 31. Kentucky bluegrass (Poa pratensis). tucky bluegrass furnishes nutr