Juncus debilis |
Juncus anthelatus |
|
---|---|---|
weak rush |
giant path rush, greater poverty rush, Kentucky or poverty rush, Kentucky rush, poverty rush, Wiegand's rush |
|
Habit | Herbs, perennial, cespitose, 1–2.5 dm. | Herbs, perennial, cespitose, to (3–)7–9 dm. |
Culms | erect, terete, 1–2 mm diam., smooth. |
|
Cataphylls | 0–1, maroon or dark green, apex acute. |
1–2. |
Leaves | basal 0–1, cauline 1–3; auricles 1–1.5 mm, apex rounded, scarious; blade maroon or dark green, terete, 1–12.5 cm × 0.5–1.5 mm. |
basal, 2–3(–5); auricles transparent, 2–3.5 mm at summit of leaf sheath, apex acutish, membranous; blade flat, (10–)20–30 cm × 0.5–2.3 mm, margins entire. |
Inflorescences | terminal panicles of 3–50 heads, 2–8 cm, branches ascending to spreading; primary bract erect; heads 2–10-flowered, obpyramidal, 2–5 mm diam. |
10–100-flowered, diffuse; internodes of monochasia greater than 6 mm, primary bract usually exceeding inflorescence. |
Flowers | tepals green to straw-colored, lanceolate, 1.8–2.3(–2.5) mm, apex sharply acuminate; stamens 3, 1/2 filament length. |
pedicels 0.1–0.3(–3) mm; bracteoles 2; tepals green, lanceolate, 3.2–4.5 × 0.7–1 mm; outer and inner series nearly equal, in fruit apically erect; stamens 6, filaments 0.8–1.1 mm, anthers 0.3–0.7 mm; style 0.2 mm. |
Capsules | exserted, straw-colored, 1-locular, narrowly ellipsoid to lanceoloid, 2.8–3.7 7(–4.2) mm, apex acute, valves separating at dehiscence. |
tan, 1-locular, widely ellipsoid to obovoid, 2–3.2 × 1.1–1.6 mm. |
Seeds | ellipsoid, 0.3–0.4 mm, not tailed; body clear yellow-brown. |
tan, ellipsoid, 0.33–0.556 mm, not tailed. |
2n | = 80. |
|
Juncus debilis |
Juncus anthelatus |
|
Phenology | Fruiting summer. | Flowering and fruiting spring. |
Habitat | Marshy shores, in small streams, swamps, wet clearings, spring runs, commonly in very soft mucky substrates | Exposed or partially shaded sites in moist or seasonally wet, sandy or clay soils |
Elevation | 0–700 m (0–2300 ft) | |
Distribution |
AL; AR; DE; FL; GA; IL; KY; LA; MD; MO; MS; NC; NJ; NY; PA; SC; TN; TX; VA; Mexicos (Chiapas); Central America (Honduras)
|
AK; AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NL; NS; NT; ON; PE; QC; SK; YT
|
Discussion | Juncus debilis A. Gray is a name being proposed for conservation. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | Juncaceae > Juncus > subg. Septati | Juncaceae > Juncus > subg. Poiophylli |
Sibling taxa | ||
Synonyms | J. acuminatus var. debilis, J. radicans | J. tenuis var. anthelatus, J. macer var. anthelatus |
Name authority | A. Gray: Manual 481506. (1848) | (Wiegand) R. E. Brooks: Novon 9: 11. (1999) |
Web links |
|