Juncus bryoides |
Juncus arcticus var. balticus(synonym of Juncus balticus) |
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moss rush, mosslike dwarf rush |
Baltic rush, wire rush |
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Habit | Herbs, annual, cespitose, 0.03–0.25 dm. | Herbs, 2–10 dm. |
Culms | to 150, 0.1–0.2 mm wide. |
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Leaves | to 0.9 cm, 1/4–1 times height of plant. |
blade absent. |
Inflorescences | terminal solitary flowers; bracts subtending inflorescence (1–)2, ovate, inconspicuous, 0.3–0.9 mm, membranous, apex acute. |
6–many-flowered, loose to congested; primary bract usually several times longer than inflorescence. |
Flowers | 3-merous; : tepals (4–)6(–8), turning inward to enwrap shorter capsule at maturity, chestnut brown to black, lanceolate to oblong, 1.2–2.3(–2.8) × 0.4–0.6 mm; ; outer and inner series nearly equal, acute to acuminate; stamens 3, filaments 0.3–0.6 mm, anthers 0.15–0.25 mm; style 0.1 mm, stigma 0.2–0.3 mm. |
tepals blackish to light brown, occasionally paler, (2.5–)3.5–5.5(–6) mm; filaments 0.2–0.5 mm, anthers 1.2–2.2 mm. |
Capsules | pale reddish, 3-locular, ovoid to ellipsoid, 1–1.9 mm × 0.5–1 mm. |
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Seeds | ovoid to globose, 0.3–0.5 mm. |
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2n | = ca. 38. |
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Juncus bryoides |
Juncus arcticus var. balticus |
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Phenology | Flowering and fruiting spring–mid summer. | Flowering spring–early summer. |
Habitat | Usually fine, sandy soil of washes, swales in meadows, and seepage areas on rock outcrops | Shores, stream margins, wet meadows, fens, marshes, often slightly alkaline soils |
Elevation | 600–3600 m (2000–11800 ft) | |
Distribution |
CA; CO; ID; NV; OR; UT; Mexico
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AK; AR; AZ; CA; CO; DE; IA; ID; IL; IN; KS; MA; MD; ME; MI; MN; MO; MT; ND; NE; NH; NM; NV; NY; OH; OK; OR; PA; SD; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NL; NS; NT; NU; ON; PE; QC; SK; YT; Mexico; South America; Greenland; Europe; Asia
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Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | J. balticus, J. arcticus subsp. ater, J. arcticus subsp. littoralis, J. arcticus var. gracilis, J. arcticus var. littoralis, J. arcticus var. montanus, J. arcticus var. montanus, J. ater, J. balticus subsp. littoralis, J. balticus subsp. vallicola, J. balticus var. condensatus, J. balticus var. eremicus, J. balticus var. littoralis, J. balticus var. melanogenus, J. balticus var. montanus, J. balticus var. vallicola, J. breweri, J. vallicola | |
Name authority | F. J. Hermann: Leaflets of Western Botany 5: 117. (1948) | (Willdenow) Trautvetter: Trudy Imperatorskago. Acta Horti Petropolitani. 5: 119. (1878) |
Web links |
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