Juncus uncialis |
Juncus elliottii |
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inch high dwarf rush, inch-high rush, twelfth rush |
Elliott's rush |
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Habit | Herbs, annual, cespitose, 0.8–3.5 cm. | Herbs, perennial, cespitose, 3–9 dm. |
Roots | often with terminal tubers. |
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Culms | to 70, more than 0.2 mm diam.. |
erect, terete, 1–3 mm diam., smooth. |
Cataphylls | 1, maroon to brown, apex acute. |
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Leaves | to 2.2 cm, 1/2–3/4 height of plant. |
basal 1–3, cauline 1–2; auricles 0.5–2 mm, apex rounded, scarious; blade green or maroon, compressed, 2–16 cm × 1–2 mm. |
Inflorescences | terminal solitary flowers; bracts subtending inflorescence 1, widely truncate, enwrapping culm, inconspicuous, 0.25–0.9 mm, membranous, apex widely truncate, completely sheathing culm.. |
terminal panicles of 40–100(–200) heads, 4–16 cm, branches ascending to spreading; primary bract erect to ascending; heads 2–10-flowered, hemispheric to obpyramidal, 0.3–0.5 mm diam. |
Flowers | 3-merous, : tepals erect to recurved at maturity, greenish or tinged red, 2–4 × 0.6–0.9 mm; outer and inner series nearly equal, apex acutish; stamens usually 3, filaments 0.9–1.6 mm, anthers 0.3–0.4 mm, 1/3 length of filaments; style 0.1–0.3 mm, stigma 0.4–1.3 mm. |
tepals straw-colored, lanceolate, apex acuminate; outer tepals (2.2–)2.6–2.9 mm; inner tepals (1.8–)2.4–2.8; stamens 3, anthers 2/3 to equal filament length. |
Capsules | reddish to maroon, 3-locular, ovoid to ellipsoid, 1.8–3.2 × 1–2.5 mm, nearly equal or shorter than the tepals. |
exserted, chestnut brown, 1-locular, narrowly obpyriform to narrowly ovoid, 2.4–2.9 mm, apex acute, valves separating at dehiscence. |
Seeds | ovoid, 0.3–0.4 mm. |
ellipsoid, 0.3–0.5 mm, not tailed; body clearly yellow-brown. |
n | = 16. |
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, with faint ringlike bands at position of septa. | ||
2n | = 40. |
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Juncus uncialis |
Juncus elliottii |
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Phenology | Flowering and fruiting spring–early summer. | Fruiting summer. |
Habitat | Margins of vernal pools and ponds | Wet sands, peaty sands, or peat, exposed shores of ponds and lakes, depressions in savannas and flatwoods, moist to wet, much disturbed clearings, roadsides and ditches |
Elevation | 0–1700 m (0–5600 ft) | 0–700 m (0–2300 ft) |
Distribution |
CA; NV; OR
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AL; AR; DE; FL; GA; LA; MS; NC; NJ; SC; TN; TX; VA
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Discussion | Juncus elliottii has tubers at the ends of the roots. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | Juncaceae > Juncus > subg. Graminifolii | Juncaceae > Juncus > subg. Septati |
Sibling taxa | ||
Name authority | Greene: Pittonia 2: 105. (1890) | Chapman: Fl. South. U.S. 494. (1860) |
Web links |
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