31.
Carex
hoodii
Boott in W. J. Hooker, Fl. Bor.-Amer. 2: 211, plate 211. 1839.
Plants without conspicuous rhizomes. Culms 20—80 cm, 1.7—2 mm wide basally, 0.6—0.9 mm wide distally. Leaves: sheaths tight, green, fronts hyaline; ligules less than 3 mm, wider than to as wide as long; widest leaf blades 1—3.5 mm wide. Inflorescences capitate, with 4—8 spikes, individual spikes difficult to distinguish, 0.8—2 cm × 6—15 mm; proximal bracts to 1.5 cm; spikes with 5—10 ascending or spreading perigynia. Pistillate scales brown with green midvein, ovate, 3.8—4.3 × 1.3—2.2 mm, body as long as and slightly narrower than to as wide as perigynium, apex acute to short-awned. Anthers 1.5—2.2 mm. Perigynia dark brown with green margins, veinless or obscurely veined abaxially, 3.2—5 × 1.4—2.5 mm, margins serrulate distally; beak 0.7—1.5 mm, apical teeth 0.2—0.6 mm. Achenes suborbiculate, 1.7—2.1 × 1.7—1.8 mm. 2n = 58, 60.
Fruiting late spring—mid summer. Dry to mesic grasslands, rocky slopes, screes, forest openings; 0—3500 m; Alta., B.C., Sask., Yukon; Alaska, Calif., Colo., Idaho, Mont., Nev., Oreg., S.Dak., Utah, Wash., Wyo.
