. California praterie e gamma foraggere graminacee. Erbe e piante di foraggio. Fig. 68. Distribuzione di hairgrasses (Deschampsia spp.) Quattro hairgrasses si trovano su- Cali fornia gamma terre. Delle tre specie importanti per foraggio, due sono le piante perenni e uno annuale. (Fig. 68.) chiave a specie vegetali annuale, awns piegato 3. D. danthonioides piante perenni; awns quasi Panicle diritta aperta 1. D. caespitosa Panicle strette dense 2. D. holciformis 1. HAIRGRASS TUFTED (Deschampsia caespitosa) cresce in densi ciuffi, 1%- S1/^ ft (45-100 cm), con abbondanti piuttosto rigida fogliame; panicle piramidale, t

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. California grasslands and range forage grasses. Grasses; Forage plants. Fig. 68. Distribution of hairgrasses (Deschampsia spp.) Four hairgrasses are found on Cali- fornia range lands. Of the three species important for forage, two are perennials and one an annual. (Fig. 68.) Key to Species Plants annual, awns bent 3. D. danthonioides Plants perennial; awns nearly straight Panicle open 1. D. caespitosa Panicle narrow, dense 2. D. holciformis 1. TUFTED HAIRGRASS (Deschampsia caespitosa) grows in dense tufts, 1%- S1/^ ft (45-100 cm) tall, with abundant rather stiff foliage; panicle pyramidal, the branches whorled, spikelet-bearing towards the ends; spikelets 4-5 mm long, shining. (Fig. 69.) Distribution and habitat: Tufted hair- grass occurs from Sonoma County in the Coast Range to the northern border of the state, and southward into Tulare County in the Sierra at altitudes between 5000 and 10, 000 ft. It is best adapted to moist or semimarshy soils of open areas, where it frequently forms pure stands. On dry, shady sites it is not so luxuriant, and is found mixed with sedges, trise- tums, and perennial forbs. Tufted hair- grass is the key indicator in determining condition and utilization of mountain meadows (44). Forage value and reproduction: Ani- mals admitted to tufted-hairgrass range before the plants are mature consume the leafage with relish. On its normally moist habitat, the plant furnishes fresh succulent grazing all summer. It repro- duces well by stooling and is resistant to heavy grazing. The seed crop matures late and, though not generally large, ap- pears to germinate well. 2. CALIFORNIA HAIRGRASS (Deschamp- sia holciformis) is rather robust, densely tufted, mostly 2-4 ft (60-125 cm) tall; panicle 4^8% in (10-25 cm) long, nar- row, dense, purplish to brownish; spike- lets 6-8 mm long, the awn erect.. Fig. 69. Tufted hairgrass (Deschampsia caespitosa). [78]. Please note that these images are extracted from scanned page images that may have been digitall

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