Juncus brachyphyllus(synonym of Juncus trilocularis) |
Juncus bryoides |
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foothill rush |
moss rush, mosslike dwarf rush |
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Habit | Herbs, perennial, cespitose, to 8 dm. | Herbs, annual, cespitose, 0.03–0.25 dm. |
Rhizomes | densely branching. |
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Culms | to 150, 0.1–0.2 mm wide. |
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Cataphylls | 1–2. |
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Leaves | basal, 2–5; auricles 0.4–1.1(–2) mm, scarious; blade flat, 9–25 cm × 0.8–1.5(–2.4) mm, margins entire wide, becoming involute under xeric conditions. |
to 0.9 cm, 1/4–1 times height of plant. |
Inflorescences | 10–150-flowered, usually congested, 1.5–8 cm; primary bract usually longer than inflorescence. |
terminal solitary flowers; bracts subtending inflorescence (1–)2, ovate, inconspicuous, 0.3–0.9 mm, membranous, apex acute. |
Flowers | bracteoles 2; tepals green to tannish, lanceolate, 3.5–5.7 mm; outer and inner series nearly equal, in fruit apex appressed to capsule; stamens 6, filaments 0.6–1.1 mm, anthers 0.56–0.91 mm; style 0.2 mm. |
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. |
Capsules | dark tan to reddish brown, 3-locular, ellipsoid to narrowly so, 2.6–4.7 × 1.3–2 mm, barely shorter than tepals. |
pale reddish, 3-locular, ovoid to ellipsoid, 1–1.9 mm × 0.5–1 mm. |
Seeds | tan, ellipsoid to lunate, (0.32–)0.45–0.52(–0.65) mm, not tailed. |
ovoid to globose, 0.3–0.5 mm. |
2n | = ca. 80. |
= ca. 38. |
Juncus brachyphyllus |
Juncus bryoides |
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Phenology | Flowering and fruiting late spring–early summer. | Flowering and fruiting spring–mid summer. |
Habitat | Exposed moist or wet soils associated with depressions in temporal wetlands, along stream banks or lake shores especially in sandy soils | Usually fine, sandy soil of washes, swales in meadows, and seepage areas on rock outcrops |
Elevation | 900–1650 m (3000–5400 ft) | 600–3600 m (2000–11800 ft) |
Distribution |
AR; CA; ID; KS; LA; MO; MT; NE; OK; OR; WA; Texas
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CA; CO; ID; NV; OR; UT; Mexico
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Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | J. kansanus | |
Name authority | Wiegand: Bulletin of the Torrey Botanical Club 27: 519. (1900) | F. J. Hermann: Leaflets of Western Botany 5: 117. (1948) |
Web links |