Juncus trifidus L.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Juncaceae
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Scientific Name
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Description
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Species Description - Stems densely cespitose from a short rhizome, 5–30 cm up to the infl, surrounded at base by crowded sheaths ca 3 cm, naked for most of their length, and bearing toward the summit 2 or 3 filiform, minutely serrulate lvs 4–10 cm and 1 or sometimes 2 simple infls of 1–4 fls, the fls prophyllate, with lacerate bracteoles; basal sheaths with fimbriate-lacerate auricles and a short bristle-tip; tep lanceolate or lance-ovate, brown, the sep acuminate or aristate, mostly 3–4 mm, the pet acute or acuminate, slightly shorter; anthers 6, ca twice as long as the filaments; fr trilocular, 2.5–3.5 mm, broadly obovoid, with a slender beak ca 1 mm; seeds few, irregularly polyhedral, 0.6–1.3 mm; 2n=30. Rock crevices and alpine meadows; Europe and ne. Amer., s. in the mts. to Va. and N.C. Plants from N.Y. southward mostly have relatively large fls for the sp., with only 1 or 2 fls per infl, and have been segregated as ssp. carolinianus Hämet-Ahti (var. monanthos, misapplied). More northern plants in e. N. Amer. mostly have 2–4 fls per infl and pass as typical J. trifidus.