Juncus bufonius |
Juncus lesueurii |
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common toad rush, toad rush |
Lesueur's rush, salt rush |
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Habit | Herbs, annual, cespitose, 0.5–4 dm. | Herbs, perennial, 3–14 dm. |
Rhizomes | long- creeping. |
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Culms | 1–many, occasionally becoming decumbent. |
erect, 1–3 mm diam. |
Cataphylls | 0–2. |
several. |
Leaves | basal and cauline; auricles rudimentary or absent; blade flat, 3–13 cm × 0.3–1.1 mm. |
blade absent. |
Inflorescences | loose and diffuse or less often compact, usually at least ½1/2 total height of plant; primary bract shorter than inflorescence. |
lateral, 3–many-flowered, mostly loose; primary bract much longer than inflorescence. |
Flowers | bracteoles 2; tepals greenish, lanceolate, 3.8–7(–8.5) mm; inner series slightly shorter, apex sometimes obtuse; stamens 3–6, filaments (0.7–)1–1.8 mm, anthers 0.3–0.8 mm; style 0.1–0.2 mm. |
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 | tan to reddish brown, 3-locular, ellipsoid to narrowly so, slightly truncate, 2.7–4 × 1–1.5 mm, sometimes exceeding inner tepals but usually not outer series. |
3-locular, oblate to narrowly ovoid, 4–7 mm, shorter than or nearly equal to perianth. |
Seeds | yellowish, widely ellipsoid to ovoid, 0.26–0.49, not tailed. |
dark amber, oblate to ellipsoid, 0.4–0.7 mm. |
2n | = 27–37, 58–81, 108–115. |
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Juncus bufonius |
Juncus lesueurii |
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Phenology | Flowering and fruiting spring–early fall. | Flowering and fruiting summer. |
Habitat | Moist soils in meadows, along lakeshores or stream banks, ditches, or roadsides, especially frequent in drawdown areas, usually in open sites and often becoming weedy | Borders of salt or freshwater marshes and usually near dunes along the coast |
Elevation | 0–500 m (0–1600 ft) | |
Distribution |
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; Greenland; nearly worldwide
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CA; OR; WA; BC
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Discussion | Nearly worldwide, Juncus bufonius is found essentially throughout North America except north of the Alaskan and Canadian tTaiga. Juncus bufonius is a highly polymorphic complex that is poorly understood systematically. Insufficient evidence exists upon which to base the segregation of the plethora of taxa that have been recognized out of this group in the past. (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. Poiophylli | Juncaceae > Juncus > subg. Genuini |
Sibling taxa | ||
Synonyms | J. bufonius var. congestus, J. bufonius var. halophilus, J. bufonius var. hybridus, J. bufonius var. occidentalis, J. bufonius var. ranarius, J. congestus, J. ranarius | J. balticus subsp. pacificus, J. lesueurii var. tracyi |
Name authority | Linnaeus: Sp. Pl. 1: 328. (1753) | Bolander: Proceedings of the California Academy of Sciences 2: 179. 1863 (as leseurii) |
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