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Threadleaf Beaksedge

Rhynchospora filifolia A. Gray

Distribution

    Distribution
    provided by eFloras
    Ala., Del., Fla., Ga., La., Md., Miss., N.J., N.C., S.C., Tex., Va.; West Indies (Cuba); Central America; South America.
    license
    cc-by-nc-sa-3.0
    copyright
    Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
    bibliographic citation
    Flora of North America Vol. 23: 206, 232, 234 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
    source
    Flora of North America @ eFloras.org
    editor
    Flora of North America Editorial Committee
    project
    eFloras.org
    original
    visit source
    partner site
    eFloras
    ID
    114829_distribution

Morphology

    Comments
    provided by eFloras
    On the acidic, sphagnous substrates shaded by Taxodium ascendens, Nyssa biflora, and Ilex myrtifolia stands in western Florida and southern Alabama, culms of Rhynchospora filifolia reach their greatest length and are lax, leaning on other vegetation, and produce increasingly more distant clusters of spikelets that are of a paler color than is usual for the species. In fact, R. filifolia presents the greatest morphologic spectrum for its complex of species, a complex best held together by the uniformity of its fruits.
    license
    cc-by-nc-sa-3.0
    copyright
    Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
    bibliographic citation
    Flora of North America Vol. 23: 206, 232, 234 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
    source
    Flora of North America @ eFloras.org
    editor
    Flora of North America Editorial Committee
    project
    eFloras.org
    original
    visit source
    partner site
    eFloras
    ID
    114828
    Description
    provided by eFloras
    Plants perennial, cespitose, 30–80(–100) cm; rhizomes absent. Culms erect or excurved, mostly filiform, leafy proximal to midculm, obtuse-angled to subterete, wiry. Leaves overtopped by culm; blades narrowly linear, proximally flat, 1–2 mm wide, distally tapering-triquetrous. Inflorescences: spikelet clusters 2–3(–4), distant, narrowly turbinate to hemispheric, mostly shorter than subtending setaceous bract. Spikelets red-brown, lanceoloid, 2.5–3(–4) mm, apex acuminate; fertile scale elliptic, 2–2.5 mm, acute, midrib excurrent as cusp or aristula. Flowers: bristles 6, reaching tubercle tip or beyond, antrorsely barbellate, base setose. Fruits 2–4 per spikelet, 1.5–1.7 mm, on setose pedicellar joint 0.2 mm, body with faces red-brown with pale glassy center, decurrent tubercle base; surfaces smooth; turbercle concavely triangular, 0.4–0.6 mm, setulose-ciliate.
    license
    cc-by-nc-sa-3.0
    copyright
    Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
    bibliographic citation
    Flora of North America Vol. 23: 206, 232, 234 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
    source
    Flora of North America @ eFloras.org
    editor
    Flora of North America Editorial Committee
    project
    eFloras.org
    original
    visit source
    partner site
    eFloras
    ID
    114827

Diagnostic Description

    Synonym
    provided by eFloras
    Phaeocephalum filifolium (A. Gray) House
    license
    cc-by-nc-sa-3.0
    copyright
    Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
    bibliographic citation
    Flora of North America Vol. 23: 206, 232, 234 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
    source
    Flora of North America @ eFloras.org
    editor
    Flora of North America Editorial Committee
    project
    eFloras.org
    original
    visit source
    partner site
    eFloras
    ID
    114826

Habitat

    Habitat
    provided by eFloras
    Sands and peats of bogs, pineland pond shores, seeps, and low savannas in pinelands; 0–300m.
    license
    cc-by-nc-sa-3.0
    copyright
    Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
    bibliographic citation
    Flora of North America Vol. 23: 206, 232, 234 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
    source
    Flora of North America @ eFloras.org
    editor
    Flora of North America Editorial Committee
    project
    eFloras.org
    original
    visit source
    partner site
    eFloras
    ID
    114829

Cyclicity

    Flowering/Fruiting
    provided by eFloras
    Fruiting summer–fall.
    license
    cc-by-nc-sa-3.0
    copyright
    Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
    bibliographic citation
    Flora of North America Vol. 23: 206, 232, 234 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
    source
    Flora of North America @ eFloras.org
    editor
    Flora of North America Editorial Committee
    project
    eFloras.org
    original
    visit source
    partner site
    eFloras
    ID
    114829_cyclicity