Juncus drummondii

E. Meyer

in C. F. von Ledebour, Flora Rossica 4: 235. 1853.

Common names: Drummond's rush
Etymology: for Thomas Drummond
Synonyms: Juncus compressus var. subtriflorus E. Meyer Juncus drummondii var. longifructus H. St. John Juncus drummondii var. subtriflorus (E. Meyer) C. L. Hitchcock Juncus subtriflorus (E. Meyer) Coville Juncus pauperculus Schwarz
Treatment appears in FNA Volume 22.

Herbs, perennial, strongly tufted, to 4 dm. Rhizomes densely short-branched. Culms terete. Cataphylls several. Leaves: blade absent or rarely present, to 1 cm. Inflorescences 2–5-flowered, loosely compact; primary bract usually longer than inflorescence. Flowers pedicellate; tepals brown to chestnut brown with green midstripe, lanceolate or widely so, (4–)5–8 mm, margins clear; inner series loosely subtending capsule at maturity, shorter; stamens 6, filaments 0.7–1 mm, anthers 1.1–1.6 mm; style 0.2 mm. Capsules brown to chestnut brown, 3-locular, oblate, 4.5–7(–8) × 1.8–2.2 mm, nearly equal to or exceeding perianth. Seeds amber, body oblate, 0.5–0.6 mm.

Phenology: Flowering and fruiting summer.
Habitat: Exposed slopes, stream banks, and meadows in montane and alpine areas
Elevation: 1600–4000 m


V22 542-distribution-map.jpg

Alta., B.C., N.W.T., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.


Plants with capsules distinctly longer than the perianth have been referred to as Juncus drummondii var. subtriflorus. Those plants frequently occur sympatrically with J. drummondii (strict sense) through most of its range, leaving considerable doubt as to the value of recognizing such variation.

Selected References


Lower Taxa

... more about "Juncus drummondii"
Ralph E. Brooks* +  and Steven E. Clemants* +
E. Meyer +
Drummond's rush +
Alta. +, B.C. +, N.W.T. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +  and Wyo. +
1600–4000 m +
for Thomas Drummond +
Exposed slopes, stream banks, and meadows in montane and alpine areas +
Flowering and fruiting summer. +
in C. F. von Ledebour, Flora Rossica +
Illustrated +  and Endemic +
Juncus compressus var. subtriflorus +, Juncus drummondii var. longifructus +, Juncus drummondii var. subtriflorus +, Juncus subtriflorus +  and Juncus pauperculus +
Juncus drummondii +
Juncus subg. Genuini +
species +