Difference between revisions of "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.
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Revision as of 20:58, 16 December 2019
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
Distribution
Ala., Fla., Miss., N.C., Pa., S.C., Tenn.
Discussion
Selected References
None.
Lower Taxa
None.