Juncus trifidus

Linnaeus

Sp. Pl. 1: 326. 1753.

Illustrated
Synonyms: Juncus monanthos Jacquin Juncus trifidus subsp. carolinianus Hämit-Ahti Juncus trifidus subsp. monanthos (Jacquin) Ascherson & Graebner Juncus trifidus var. monanthos (Jacquin) Bluff & Fingerhuth
Treatment appears in FNA Volume 22.

Herbs, perennial, tufted, 1–4 dm. Rhizomes densely branching. Culms few to many, erect to drooping. Cataphylls 2–4. Leaves basal and cauline, 2–4; auricles deeply lacerate, to 4 mm, membranous; blade dark green, flat to slightly channeled, 5–12 cm × 0.5–1 mm, margins finely serrulate. Inflorescences 1–3(–4)-flowered; primary bract usually exceeding inflorescence. Flowers: bracteoles 2, usually lacerate; tepals brownish, widely lanceolate, 2.1–3 mm; inner series slightly shorter, apex acute; stamens 6, filaments 0.3–0.7 mm, anthers 1.2–1.5 mm; stigma 1.5–3 mm. Capsules brown, ellipsoid, 2.2–3.5 × 1.3–1.7 mm, longer than tepals. Seeds brown, obliquely ovoid, 0.89–1.35 mm, not tailed. 2n = 40.


Phenology: Flowering and fruiting late spring–early summer.
Habitat: Mostly in crevices of granitic (schistose) cliffs or rubble slopes in the higher regions of the Appalachians
Elevation: 20–2000 m

Distribution

V22 116-distribution-map.jpg

Greenland, N.B., Nfld. and Labr., N.S., Nunavut, Que., Maine, N.H., N.Y., N.C., Tenn., Vt., Va., Europe, n Asia.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Juncus trifidus"
Ralph E. Brooks* +  and Steven E. Clemants* +
Linnaeus +
Greenland +, N.B. +, Nfld. and Labr. +, N.S. +, Nunavut +, Que. +, Maine +, N.H. +, N.Y. +, N.C. +, Tenn. +, Vt. +, Va. +, Europe +  and n Asia. +
20–2000 m +
Mostly in crevices of granitic (schistose) cliffs or rubble slopes in the higher regions of the Appalachians +
Flowering and fruiting late spring–early summer. +
Illustrated +
Juncus monanthos +, Juncus trifidus subsp. carolinianus +, Juncus trifidus subsp. monanthos +  and Juncus trifidus var. monanthos +
Juncus trifidus +
Juncus subg. Poiophylli +
species +