Juncus interior

Illustrator: Yevonn Wilson-Ramsey

Copyright: Flora of North America Association

Herbs, perennial, tufted, 2–6 dm. Rhizomes densely branching. Culms 1–10. Cataphylls 1–3. Leaves basal, 1–2(–3); auricles whitish or purplish tinged, 0.2–0.4(–0.6) mm, scarious; blade flat, 5–15 cm × 0.5–1.1 mm, margins entire. Inflorescences usually somewhat compact, 1.5–7 cm; primary bract usually shorter than inflorescence. Flowers: bracteoles 2; tepals greenish, lanceolate, 3.3–4.4 mm, apex acuminate; stamens 6, filaments 0.5–0.9 mm, anthers 0.4–0.6 mm; style 0.1–0.2 mm. Capsules light tan or darker, 1-locular to pseudo-3-locular, ellipsoid to nearly globose, (3.3–)3.8–4.7 mm, nearly equal to or longer than tepals. Seeds tan, ellipsoid to lunate, 0.436–0.73 mm, not tailed. 2n = 80.

Phenology: Flowering and fruiting late spring–early summer.
Habitat: Dry, often upland sites in prairies, exposed disturbed sites, and ditches in sandy or clayey soils

Distribution

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Alta., Man., Ont., Que., Sask., Ariz., Ark., Colo., Ill., Ind., Iowa, Kans., Ky., La., Minn., Mont., Mo., Nebr., N.Mex., N.Dak., Ohio, Okla., S.Dak., Tenn., Tex.as, Utah, Wis., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.