Juncus hallii

Engelmann

2:446. 1866.

Common names: Hall's rush
Endemic
Treatment appears in FNA Volume 22.

Herbs, perennial, strongly tufted, to 4 dm. Rhizomes densely short-branched. Culms terete. Cataphylls several. Leaves: auricles 0.2 mm, apex acutish to rounded, scarious; blade 4–15 cm. Inflorescences 2–7-flowered, loose to congested; primary bract usually longer than inflorescence. Flowers pedicellate; bracteoles ovate; tepals light brown with green midstripe, lanceolate or widely so, 4–5 mm, margins scarious; inner series loosely subtending capsule at maturity, shorter; stamens 6, filaments 0.8 mm, anthers 0.8–1.1 mm; style 0.2 mm. Capsules brown, 3-locular, oblong-ovoid, 3.5–5 × 1.5–1.9 mm, slightly exceeding perianth. Seeds amber, body 0.5 mm, tails 0.3 mm.


Phenology: Flowering and fruiting summer.
Habitat: Exposed slopes, stream banks, and meadows in montane and alpine areas
Elevation: 1600–3000 m

Distribution

V22 166-distribution-map.jpg

Colo., Idaho, Mont., Utah, Wash., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Juncus hallii"
Ralph E. Brooks* +  and Steven E. Clemants* +
Engelmann +
Hall's rush +
Colo. +, Idaho +, Mont. +, Utah +, Wash. +  and Wyo. +
1600–3000 m +
Exposed slopes, stream banks, and meadows in montane and alpine areas +
Flowering and fruiting summer. +
Abhandlungen herausgegeben vom naturwissenschaftlichen Vereine zu Bremen +
Juncus sect. Genuini +, Juncus sect. Juncotypus +  and Juncus subg. Juncotypus +
Juncus hallii +
Juncus subg. Genuini +
species +