Juncus brevicaudatus |
Juncus lesueurii(synonym of Juncus breweri) |
|
---|---|---|
narrow-panicle rush, short-tail rush |
Brewer's rush, salt or Brewer's rush, salt rush |
|
Habit | Herbs, perennial, cespitose, 1.4–5.5(–7) dm. | Herbs, perennial, 3–14 dm. |
Rhizomes | long- creeping. |
|
Culms | erect, terete, 1–3 mm diam., smooth. |
erect, 1–3 mm diam. |
Cataphylls | 0–1, straw-colored to pink, apex acute. |
several. |
Leaves | basal 1–3, cauline 1–2; auricles 0.5–3 mm, apex rounded to truncate, scarious; blade terete, 1.5–25 cm × 0.5–2.5 mm. |
blade absent. |
Inflorescences | terminal panicles or racemes of 2–35 heads, 1–12 cm, branches erect; primary bract erect; heads 2–8-flowered, ellipsoid to narrowly obconic, 2–9 mm diam. |
lateral, 3–many-flowered, mostly loose; primary bract much longer than inflorescence. |
Flowers | tepals green to light brown, lanceolate; outer tepals 2.3–3.1 mm, apex acuminate to rarely obtuse; inner tepals 2.5–3.2 mm, apex acuminate; stamens 3 (or 6), anthers 1/4–1/2 filament length. |
variously pedicellate; bracteoles membranous; tepals green, lanceolate, 5–8 mm, margins brown; inner series loosely subtending capsule at maturity, usually slightly shorter, margins scarious to clear, acutish; stamens 6, filaments 0.2–1.1 mm, anthers 0.9–2.3 mm; style 1–1.5 mm. |
Capsules | exserted, chestnut brown, imperfectly 3-locular, narrowly ellipsoid to prismatic, 3.2–4.8 mm, apex acute proximal to beak, valves separating at dehiscence. |
3-locular, oblate to narrowly ovoid, 4–7 mm, shorter than or nearly equal to perianth. |
Seeds | fusiform, 0.7–1.2 mm, tailed; body covered with whitish translucent veil. |
dark amber, oblate to ellipsoid, 0.4–0.7 mm. |
2n | = 80. |
|
Juncus brevicaudatus |
Juncus lesueurii |
|
Phenology | Fruiting mid summer–fall. | Flowering and fruiting summer. |
Habitat | Generally in acidic or peaty moist sites, including emergent shorelines and aroundg hot springs | Borders of salt or freshwater marshes and usually near dunes along the coast |
Elevation | 100–2500 m (300–8200 ft) | 0–500 m (0–1600 ft) |
Distribution |
AZ; CO; CT; MA; MD; ME; MI; MN; MT; NC; NH; NY; OR; PA; RI; TN; UT; VA; VT; WI; WV; WY; AB; BC; MB; NB; NL; NS; ON; PE; QC; SK
|
CA; OR; WA; BC
|
Discussion | Populations from about around hot springs in the west have been separated as Juncus tweedyi Rydberg, but no morphologic distinction appears to exist between J. tweedyi and J. brevicaudatus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | J. canadensis var. brevicaudatus, J. canadensis var. coarctatus, J. canadensis var. kuntzei, J. coarctatus, J. kuntzei, J. tweedyi | J. balticus subsp. pacificus, J. lesueurii var. tracyi |
Name authority | (Engelmann) Fernald: Rhodora 6: 35. (1904) | Bolander: Proceedings of the California Academy of Sciences 2: 179. 1863 (as leseurii) |
Web links |
|