Juncus textilis |
Juncus effusus |
|
---|---|---|
basket rush, mat or basket rush |
common bog rush, common rush, common soft rush, pasture rush, soft or lamp rush, soft rush |
|
Habit | Herbs, perennial, 10–20 dm. | Herbs, perennial, 4–13 dm. |
Rhizomes | long- creeping. |
short -branched, forming distinct, often large clumps. |
Culms | erect, 2–5 mm diam. |
erect, terete, 1–2.5 mm diam. at top of sheaths. |
Cataphylls | several. |
several. |
Leaves | blade absent. |
blade absent. |
Inflorescences | lateral, many flowered, loose; primary bract barely exceeding to many times longer than inflorescence. |
lateral, compound dichasia, many flowered; primary bract erect, terete, extending well beyond dichasium. |
Flowers | variously pedicellate; bracteoles membranous; tepals greenish to pale brown, lanceolate, 3.5–5 mm; inner series loosely subtending capsule at maturity, usually slightly shorter, margins scarious to clear, acutish; stamens 6, filaments 0.3–0.9 mm, anthers 1–2.5 mm; style 1–1.5 mm. |
tepals tan or darker, usually with greenish midstripe, lanceolate, 1.9–3.5 mm; inner slightly shorter; stamens 3, filaments 0.5–0.8 mm, anthers 0.5–0.8 mm; style 0.2 mm. |
Capsules | dark brown, 3-locular, oblate to narrowly ovoid, 3–4 mm, nearly equal to perianth. |
greenish tan or darker, 3-locular, broadly ellipsoid to oblate, 1.5–3.2 mm. |
Seeds | dark amber, oblate to ellipsoid, 0.5–0.8 mm. |
amber, (0.3–)0.4–0.5 mm. |
2n | = 40, 42. |
|
Juncus textilis |
Juncus effusus |
|
Phenology | Flowering and fruiting summer. | Flowering summer, fruiting summer–fall. |
Habitat | Moist or wet exposed areas | Swamps and their edges, marshes, moist meadows, and moist or saturated soils, often conspicuous in pasture meadows where it is shunned by grazing animals |
Elevation | 100–1800 m (300–5900 ft) | Habitat??; 0–2500 m (Habitat??; 0–8200 ft) |
Distribution |
CA
|
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; NE; NH; NJ; NV; NY; OH; OK; OR; PA; RI; SC; TN; TX; VA; VT; WA; WI; WV; WV; BC; MB; NB; NF; NS; ON; PE; QC
|
Discussion | The Juncus effusus complex has been variously recognized as containing several species or a single species with numerous infraspecific taxa. Unfortunately, North American treatments have dealt primarily with taxa in either the eastern or western portions of the continent. In considering the continent as a whole, little sense can be made of these treatments. The North American J. effusus complex is one that is in obvious need of modern systematic scrutiny. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | J. lesueurii var. elatus | J. conglomeratus, J. effusus var. brunneus, J. effusus var. caeruleomontanus, J. effusus var. costulatus, J. effusus var. dicipiens, J. effusus var. exiguus, J. effusus var. gracilis, J. effusus var. pylaei, J. effusus var. solutus, J. effusus var. subglomeratus, J. griscomii |
Name authority | Buchenau: Abhandlungen herausgegeben vom naturwissenschaftlichen Vereine zu Bremen 17: 336. (1903) | Linnaeus: Sp. Pl. 1: 326. (1753) |
Web links |
|