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dagger-leaved rush, swordleaf rush
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Plants perennial, 15–65 cm tall, rhizomatous. |
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flat; iris-like, blue-green, partially septate; auricles usually absent (0.1–0.4 mm). |
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1–12(22) clusters; clusters often head-like, 3–70-flowered. |
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tepals 6, brown to often dark brown or black; stamens 3; filaments 0.6–1.1 mm; anthers 0.4–0.7 mm; styles 0.2–0.8(1) mm. |
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longer than or equaling tepals, dark brown to blackish; apices obtuse or acute and abruptly tapered to short beak, 1-chambered. |
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0.4–0.5(0.6) × 0.15–0.2 mm, apiculate, reticulate. |
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Juncus acutus |
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Shores, swales, springs, wet meadows, wet prairie, damp dunes, peatlands, ditches. 0–2500m. Throughout Oregon. CA, ID, NV, WA; north to Alaska, east to Saskatchewan, SD and CO, south to AZ and Mexico; Ontario and Quebec south to WI and NY; HI; northeastern Asia, Europe, New Zealand. Native. With three stamens, this species is reliably separated from J. saximontanus, which has six stamens. Rare plants with variable stamen numbers in an inflorescence may represent hybrids and need investigation. |
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Flora of Oregon, volume 1, page 277
Peter Zika |
J. acuminatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brevicaudatus, J. breweri, J. bryoides, J. bufonius, J. bulbosus, J. canadensis, J. capillaris, J. capitatus, J. compressus, J. confusus, J. conglomeratus, J. covillei, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius, J. ensifolius x Juncus nevadensis, J. exiguus, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. kelloggii, J. laccatus, J. lescurii, J. longistylis, J. marginatus, J. mertensianus, J. mexicanus, J. nevadensis, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. planifolius, J. ranarius, J. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis |
J. acuminatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brevicaudatus, J. breweri, J. bryoides, J. bufonius, J. bulbosus, J. canadensis, J. capillaris, J. capitatus, J. compressus, J. confusus, J. conglomeratus, J. covillei, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius x Juncus nevadensis, J. exiguus, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. kelloggii, J. laccatus, J. lescurii, J. longistylis, J. marginatus, J. mertensianus, J. mexicanus, J. nevadensis, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. planifolius, J. ranarius, J. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis |
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Juncus ensifolius var. ensifolius, Juncus tracyi |
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BC, 
CA, 
OR, 
WA
Flora NW, 
PNW Herbaria
WildflowerSearch
iNaturalist (observations)
USDA Plants Database
