Overview

Distribution

National Distribution

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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N.B., Nfld. and Labr., N.S., Ont., Que., Sask.; Conn., Del., Ill., Ind., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., Pa., R.I., Vt., Wis.; Europe.
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Physical Description

Morphology

Description

Plants perennial, cespitose, 10–50 cm; rhizomes stoloniferous, slender. Culms erect to excurved, filiform, leafy, ± terete. Leaves shorter than culm; blades ascending, filiform, proximally to 1.5(–2)mm wide, apex trigonous, tapering, setaceous. Inflorescences: lateral spikelet clusters (0–)1–2, distant, terminal cluster ellipsoid to broadly turbinate or hemispheric, branches ascending; leafy bracts setaceous, overtopping clusters. Spikelets red-brown to deep brown, lanceoloid, (4–)5–6(–7) mm, apex acute; fertile scales lanceolate, 4–5(–6) mm, apex acuminate, midrib often excurrent as awn. Flowers: bristles 5–6, longest reaching at least past tubercle base, mostly to tip or beyond, antrorsely barbellate. Fruits 2(–3) per spikelet, (2.3–)2.5–2.6(–3) mm with pedicellar joint, receptacle, and tubercle; body lustrous, pale brown to deep brown, obovoid to ellipsoid, lenticular, 1–1.5 × 1 mm, margins narrow, flowing to tubercle; surfaces longitudinally finely lined, transversely very finely ridged with wavy rows of very narrow, vertical lattices, sometimes also with lines of shallow pits; tubercle triangular subulate, (0.7–)1–1.3(–1.5) mm, base lunate, margins setulose proximally.
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Diagnostic Description

Synonym

Schoenus fuscus Linnaeus, Sp. Pl. ed. 2, 2: 1664. 1763; Phaeocephalum fuscum (Linnaeus) House; Rhynchospora alba (Linnaeus) Vahl var. fusca (Linnaeus) Vahl
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Ecology

Habitat

Comments: Grows on sandy, peaty shores of ponds and in peatlands (Haines 2011).

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Sands and peats of pond shores, bogs, and seeps; 0–400m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Fruiting summer–fall.
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Life Cycle

Persistence: ANNUAL, PERENNIAL

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Rhynchospora fusca

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


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Statistics of barcoding coverage: Rhynchospora fusca

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 6
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: N4 - Apparently Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

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