Carex helleri Mack.

Plants densely cespitose. Culms 5–30 cm, proximally scabrous. Leaves 2–3 mm wide. Inflorescences: proximal bracts shorter than or exceeding inflorescences; spikes overlapping, erect, elongate, sessile or short-pendunculate, contiguous, forming dense terminal cluster or separate, 10–20 × 5–7 mm; lateral 2–3 spikes pistillate; terminal spike gynecandrous. Pistillate scales dark brown or black to margins, lanceolate, 1–2 times as long as and narrower than perigynia, midvein lighter colored than body, conspicuous, frequently raised, prominent, apex acute or acuminate, mucronate. Perigynia ascending, dark brown or purple-black with green or yellowish brown margins, veinless, elliptic or obovate, 2.5–3 × 2–3 mm, apex gradually or abruptly beaked, distal margins smooth; beak 0.25–0.3 mm, bidentate, smooth. Achenes filling proximal 1/2 or less of perigynia.

Calif., Nev.

Fruiting Jul–Aug.

Rocky slopes; 2900–3800m.

Carex atrata Linnaeus var. nigra W. Boott

Carex helleri Mackenzie, Erythea 8: 80. 1922
Carex alrata var. nigra W. Boott, in S. Wats. Bot. Calif. 2: 239, in part. 1880. "Carex nova L. H. Bailey" Smiley, Univ. Calif. Publ. Bot. 9: 124. 1921.
Very densely cespitose, not stoloniferous, the culms 0.5-3 dm. high, slender but strictly erect, sharply triangular, roughened on angles beneath head, exceeding leaves, phyllopodic, purplish-red-tinged at base, the dried-up leaves of the previous year inconspicuous; leaves with well-developed blades usually 6-10 to a fertile culm, clustered near the b ptate-
nodulose, the blades flat with slightly revolute margins, stiff, lighl green, eri ading,
up to 1 dm. long, 2-3.5 mm. wide, strongly attenuate, the sheaths very thin ventrally, usually
whitish, often reddish-dotted, concave at mouth, the ligulc as long as wide; S] aggregated, the terminal gynaecandrous, sessile or short-peduncled, with feu staminate li the lateral pistillate, sessile or very short-peduncled, oblong, 10-20 mm. long, 5-7 mm. wide, obtuse at apex, rounded or the terminal one tapering at basi , very densely 2^ 50-flowered, the appressed-ascending perigynia in many rows; lowest bract leaflet-like, not sheathing, shorter than inflorescence, strongly purplish-margined or auricled at base; upper bracts much reduced; scales lanceolate or lanceolate-ovate, aristate or acuminate, purplish-black, with white midvein extending entire length or in places obsolete, longer but much narrower than the perigynia; perigynia very strongly 2-edged and flat save where distended iu center by achene, broadly oval to orbicular, 2.5-3.5 mm. long, 2-3 mm. wide, 2-ribbed (the marginal), otherwise nerveless, membranaceous, smooth, puncticulate, strongly purplish-tinged, except the lightgreen margins, rounded and sessile or substipitate at base, rounded above and very abruptly minutely beaked, the beak apiculate, 0.25 mm. long, shallowly bidentate, purplish-tinged; achenes narrowly oblong-obovoid, 1.5 mm. long, 0.75 mm. wide, much narrower and shorter than the perigynia, triangular with shallowly concave sides, substipitate, yellowish-brow u, abruptly apiculate, jointed with the straight slender style; stigmas 3, slender, whitish at flowering.
Type locality: Mt. Rose, Washoe County, Nevada (Heller 9975).
Distribution: At high altitudes in the Sierra Nevada of California, from Tulare County north to El Dorado County; also in the White Mountains of California and the high mountains of western Nevada. (Specimens examined showing distribution as given.)

Carex helleri (lat. Carex helleri) - cilkimilər fəsiləsinin cil cinsinə aid bitki növü.

Carex helleri is a species of sedge known by the common name Heller's sedge. It is native to eastern California and western Nevada, where it grows on rocky mountain slopes and in other habitats.

Carex helleri es una especie de planta herbácea de la familia de las ciperáceas.

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

Carex helleri là một loài thực vật có hoa trong họ Cói. Loài này được Mack. mô tả khoa học đầu tiên năm 1922.