UW Burke Herbarium species comparison

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Juncus acutus

Juncus covillei

Coville's rush
Habit Tufted or clumping perennials, 5-25 cm, from heavy, long, creeping rhizome; stems erect and somewhat flattened.
Leaves

Basal leaves 2-5, cauline leaves 2-4;

auricles absent or, when present, 0.5-1.5 mm, apex acute;

blade flat, 5-15 cm long and 2-3 mm wide.
Inflorescence

Condensed cymes, 1-6, each with 3-7 flowers, open to aggregate, 2-6 cm; primary bract or distal leaves typically longer than inflorescence.
Flowers

Tepals usually brown, ovate-oblong, 3-4 mm, margins scarious, inner whorl slightly short and minutely papillate;

stamens 6, filaments 0.8-1.4 mm, anthers 0.8-1.4 mm;

style 1mm.
Fruits

Capsules 3-chambered, narrowly ovoid, 4-5 mm;

seeds narrowly ovoid, 0.3 mm, tails absent.

Juncus acutus

Juncus covillei
Flowering time June-August
Habitat Shores, peatlands, wet meadows, and ditches.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
J. acuminatus, J. alpinoarticulatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brachycarpus, J. brevicaudatus, J. breweri, J. bufonius, J. bulbosus, J. canadensis, J. compressus, J. confusus, J. conglomeratus, J. covillei, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. kelloggii, J. laccatus, J. longistylis, J. mertensianus, J. nevadensis, J. nodosus, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. pylaei, J. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. trilocularis, J. uncialis, J. vaseyi
J. acuminatus, J. alpinoarticulatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brachycarpus, J. brevicaudatus, J. breweri, J. bufonius, J. bulbosus, J. canadensis, J. compressus, J. confusus, J. conglomeratus, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. kelloggii, J. laccatus, J. longistylis, J. mertensianus, J. nevadensis, J. nodosus, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. pylaei, J. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. trilocularis, J. uncialis, J. vaseyi
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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