Juncus gymnocarpus


Memoirs of the Torrey Botanical Club 5: 106. 1894.

Common names: Pennsylvania rush
Basionym: Juncus smithii Engelmann Trans. Acad. Sci. St. Louis 2: 444. 1866,
Treatment appears in FNA Volume 22.

Herbs, perennial, 5–10 dm. Rhizomes widely creeping, 2–4 mm diam. Culms terete, 1.5–2.5 mm diam. Cataphylls several. Leaves: blade absent. Inflorescences 8–30(–50)-flowered, open, 1.5–4 cm; primary bract terete, 1–2.5 dm, much longer than inflorescence. Flowers pedicellate; bracteoles broadly ovate; tepals light brown, ovate-lanceolate, 1.8–2.5 mm, apex acuminate; inner series shorter, margins scarious, apex acute; stamens 6, filaments 1–1.3 mm, anthers 0.5–0.7 mm; style 0.5 mm. Capsules reddish tan to brown, lustrous, 3-locular, widely ellipsoid, 2–3 × 1.8–2.2 mm, exceeding perianth. Seeds dark amber, obovoid, 0.7–1 mm, not tailed.

Phenology: Flowering and fruiting summer.
Habitat: Sphagnous swamps, low woods, edges of lakes
Elevation: 600–1500 m


V22 197-distribution-map.jpg

Ala., Fla., Miss., N.C., Pa., S.C., Tenn.


Selected References


Lower Taxa

... more about "Juncus gymnocarpus"
Ralph E. Brooks* +  and Steven E. Clemants* +
Coville +
Juncus smithii +
Pennsylvania rush +
Ala. +, Fla. +, Miss. +, N.C. +, Pa. +, S.C. +  and Tenn. +
600–1500 m +
Sphagnous swamps, low woods, edges of lakes +
Flowering and fruiting summer. +
Memoirs of the Torrey Botanical Club +
Juncus sect. Genuini +, Juncus sect. Juncotypus +  and Juncus subg. Juncotypus +
Juncus gymnocarpus +
Juncus subg. Genuini +
species +