UW Burke Herbarium species comparison

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Juncus acutus

Juncus torreyi

Torrey's rush
Habit Perennial with slender rhizomes tuberous at the nodes, the tubers spindle-shaped, 10 mm. long and 5 mm. thick; stems 3-9 dm. tall.
Leaves

Leaves alternate, 2-4, the blades terete, with prominent partitions;

leaf bases sheathing, the sheaths projecting into rounded auricles 2-3.5 mm. long.
Flowers

Inflorescence terminal with 3-12 many-flowered heads 10-15 mm. broad, exceeded by the uppermost and involucral bracts;

perianth 4.5-5 mm. long, greenish-brown to tawny, the 6 segments narrowly lanceolate-acuminate, the inner 3 often 1 mm. shorter;

stamens 6, the anthers shorter than the filaments.
Fruits

Capsule narrowly conic, tapered from the base into a long beak that slightly exceeds the perianth.

Juncus acutus

Juncus torreyi
Flowering time June-August
Habitat Shores, swales, seeps, and ditches.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
[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. 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. 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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