Scirpus atrocinctus

Scirpus cyperinus var. brachypodus (Fernald) Gilly:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Scirpus atrocinctus Fernald:
Canada (North America)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

St. Pierre and Miquelon; Alta., B.C., Man., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Sask.; Conn., Ill., Iowa, Maine, Mass., Mich., Minn., Mont., N.H., N.J., N.Y., Pa., R.I., S.Dak., Vt., Wash., W.Va., Wis., Wyo.

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Plants aggregated in dense tussocks; rhizomes branching, short, tough, fibrous. Culms: fertile ones upright or nearly so; nodes without axillary bulblets. Leaves 4–7 per culm; sheaths of proximal leaves brown; proximal sheaths and blades with septa few to many, conspicuous or inconspicuous; blades 25–63 cm × 3–6 mm. Inflorescences terminal; rays ascending or sometimes spreading, scabrous throughout or main branches smooth proximally, rays rarely with axillary bulblets; bases of involucral bracts usually blackish, not glutinous. Spikelets in open cymes, central spikelet of each cyme sessile, others usually pedicellate, spikelets ovoid or ellipsoid, 4–7 × 2–2.7 mm; scales usually blackish, at least distally, oblong-ovate or oblong-elliptic, 1.3–1.8 mm, apex rounded or very weakly apiculate, apiculus (if present) to 0.05 mm. Flowers: perianth bristles persistent, 6, slender, contorted, much longer than achene, smooth, projecting beyond scales, mature inflorescence appearing woolly; styles 3-fid. Achenes whitish, elliptic or obovate in outline, plumply trigonous or plano-convex, 0.7– 0.9 × 0.4–0.5 mm. 2n = 68.

Scirpus cyperinus (Linnaeus) Kunth var. brachypodus (Fernald) Gilly

Marshes, moist meadows, ditches, disturbed areas; 0–800m.

Fruiting early summer (Jun–early Jul, later in far north).

The following is a representative barcode sequence, the centroid of all available sequences for this species.

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 2
Species With Barcodes: 1

Canada

Rounded National Status Rank: N5 - Secure

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: G5 - Secure