Carex subbracteata Mack.

Carex subbracteatais very similar to and perhaps conspecific with C. gracilior (R. Whitkus 1988).

Plants densely cespitose. Culms often lax, supported by other vegetation, 27–105 cm. Leaves: sheaths white-hyaline or green-veined with central white-hyaline strip, summits U-shaped to rounded, sometimes prolonged beyond collar; distal ligules 1.5–5.5 mm; blades 3–6 per fertile culm, 12–65 cm × 1.3–3.7(–4.6) mm. Inflorescences dense to open, green and brown, gold and brown, or brown, 1.3–3.5 cm × 7–23 mm; proximal internode 2–3(–4.5) mm; 2d internode 1–3 mm; proximal bracts bristlelike or rarely leaflike, longer than inflorescences. Spikes 4–11, densely aggregated, at least proximal 1–3 distinct, ovoid to broadly ovoid, 6–12.3 × 3.8–9.1 mm; base rounded; apex acute to rounded. Pistillate scales brown, red-brown, or coppery, with whitish, green, or pale brown midstripe, ovate, (3.2–)3.5–4.5 mm, shorter, narrower than, or covering perigynia, margin often indistinct, white, 0–0.4 mm wide, apex ± obtuse or rarely short-awned. Perigynia ascending to spreading, straw colored or gold to coppery, conspicuously (0–)5–9-veined abaxially, conspicuously 0–6-veined adaxially, veins not reaching top of achene, ovate to broadly ovate, plano-convex to biconvex, (2.9–)3.5–4.7(–5.7) × 1.2–1.7(–2.2) mm, 0.5–0.75 mm thick, ± leathery, margin flat, including wing 0.2–0.4 mm wide, ciliate-serrulate at least on distal body, with metallic sheen; beak often brown to dark brown at tip or white-hyaline, cylindric, unwinged, abaxial suture inconspicuous, distance from beak tip to achene 1.5–2.2(–2.6) mm, ± entire for (0.3–) 0.4–0.8 mm. Achenes broadly ovate to quadrate, 1.3–2.1 × 1–1.5(–1.7) mm, 0.5–0.6 mm thick.

Calif.

Fruiting spring–summer.

Meadows, swales, moist places, roadsides, along the coast and in Coast Ranges; 0–900m.

Carex subbracteata Mackenzie, Bull. Torrey Club 43:612. 1917.
Cespitose, from short, creeping, tough, black, fibrillose rootstocks, the culms erect, stiff, 3.5-12 dm. high, obtusely triangular, smooth, much exceeding leaves, light-brownish at base, the upper dried-up leaves of the previous year short-bladed, the lower bladeless; leaves with well-developed blades usually 3-5 to a fertile culm, on lower fourth, but not bunched, the blades flat, stiff, light-green, usually 1-3 dm. long, 2.5-4 mm. wide, the sheaths tight, hyaline ventrally, thin and short-prolonged at mouth beyond base of blade and continuous with ligule; head globose or ovoid. 1.5-2.5 cm. long and rather less thick, the spikes 5-10, closely aggregated, gynaecandrous, ovoid, rounded at base, round-tapering at apex, 6-10 mm. long, 4-6 mm. wide, the staminate flowers few, the 10-20 perigynia in several to many rows, appressed or in age appressed-ascending, the beaks not spreading; one to several of lower bracts conspicuous, dilated at base, brown with hyaline margins, the tips shorter than or occasionally exceeding head; scales ovate, obtuse or acutish, reddish-brown with lighter center and narrow white-hyaline margins, slightly narrower and shorter than perigynia; perigynia plano-convex, narrowly ovate, 3.5-4.5 mm. long, 1.5 mm. wide, dull-green or soon yellowish-brown, thick, finely several-nerved dorsally, nerveless or essentially so ventrally, coriaceous, substipitate, round-tapering and spongy at base, narrowly margined (serrulate above middle) from base, tapering somewhat abruptly into a beak one third length of body, slender, serrulate below the tip, chestnut-tinged, obliquely cut dorsally and hyaline at apex, bidentulate; achenes lenticular, thick, short-oblong, 1.75 mm. long, 1.2 mm. wide, apiculate, substipitate; style slender, jointed with achene, at length deciduous; stigmas two, slender, reddish-brown.
Type locality: Oakland, California (Bolander).
Distribution: Coast Ranges of California, from Santa Barbara County to Humboldt County. (Specimens examined showing range as given.)

Carex subbracteata, the smallbract sedge, is a species of sedge that was first described by Kenneth Mackenzie in 1917.

Carex subbracteata adalah spesies tumbuhan seperti rumput yang tergolong ke dalam famili Cyperaceae. Spesies ini juga merupakan bagian dari ordo Poales. Spesies Carex subbracteata sendiri merupakan bagian dari genus Carex. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh Mack..

Carex subbracteata là một loài thực vật có hoa trong họ Cói. Loài này được Mack. mô tả khoa học đầu tiên năm 1916 publ. 1917.