Juncus chlorocephalus |
Juncus subcaudatus |
|
---|---|---|
green head rush |
somewhat-tail rush, woodland rush |
|
Habit | Herbs, perennial, cespitose, 2–4.5 dm. | Herbs, perennial, cespitose, 1.5–6 dm. |
Culms | erect, terete, 1–3 mm diam., smooth. |
erect, 1–3 mm diam., smooth. |
Cataphylls | 1, straw-colored or maroon, apex acute. |
0–1, straw-colored, apex acute. |
Leaves | basal 1–2, cauline 2–3; auricles 2–3.5 mm, apex rounded, scarious; blade terete, 2–16 cm × 1–2 mm. |
basal 1, cauline 1–3; auricles 0.5–1 mm, apex rounded, scarious; blade terete, 4.5–15 cm × 1–2 mm. |
Inflorescences | single heads (rarely cluster of 2–3 heads), 0.5–2 cm; primary bract erect; heads 15–25-flowered, spheric, 11–14 mm diam. |
panicles or racemes of 3–35 heads, 2–16 cm, branches widely spreading (at least the proximalmost); primary bract erect; heads 2–10(–20)-flowered, obconic to nearly spheric, 3–9 mm diam. |
Flowers | tepals light green to light pink or white, lanceolate, 3.1–4.2 mm, apex obtuse; stamens 6, anthers 2–3 times filament length. |
tepals greenish, becoming straw-colored, lanceolate; outer tepals 1.8–3 mm, apex acuminate; inner tepals 2–3.2 mm, apex acuminate; stamens 3, anthers 1/3 filament length. |
Capsules | included, straw-colored, 1-locular, broadly obovoid to ovoid, 2.2–2.5 mm, apex obtuse, valves separating at dehiscence, fertile throughout or only proximal to middle. |
exserted, straw-colored, imperfectly 3-locular, ovoid to prismatic, 3–3.8 mm, apex acute proximal to beak, valves separating at dehiscence. |
Seeds | oblong, 0.5 mm, not tailed; body clear yellow-brown. |
ellipsoid, 0.7–1.2 mm, tailed; body covered with whitish translucent veil. |
Juncus chlorocephalus |
Juncus subcaudatus |
|
Phenology | Fruiting mid summer–fall. | Fruiting late summer–fall. |
Habitat | Sandbars, meadows, damp soil in rock outcrops, and talus | Stream banks, lake and pond shores, bogs, and other wet places |
Elevation | 1400–3000 m (4600–9800 ft) | 0–1000 m (0–3300 ft) |
Distribution |
CA; NV
|
AL; AR; CT; DC; DE; GA; IL; KY; MA; MD; ME; MO; NC; NJ; NY; OH; PA; RI; TN; VA; WV; NF; NS
|
Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | Juncaceae > Juncus > subg. Septati | Juncaceae > Juncus > subg. Septati |
Sibling taxa | ||
Synonyms | J. canadensis var. subcaudatus, J. subcaudatus var. planisepalus | |
Name authority | Engelmann | (Engelmann) Coville & S. F. Blake: Proceedings of the Biological Society of Washington 31: 45. (1918) |
Web links |