Juncus hemiendytus |
Juncus xiphioides |
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blood rush, dwarf rush, Herman's dwarf rush, Hermann's dwarf rush, juncus hemiendytus |
iris-leaf rush |
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Habit | Herbs, annual, cespitose, 0.03–0.36 dm. | Herbs, perennial, rhizomatous, 5–9 dm. | ||||
Rhizomes | 2–3 mm diam. |
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Culms | to 5. |
erect, 2–6 mm diam. |
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Cataphylls | 0 or 1–2, straw-colored, apex narrowly acute. |
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Leaves | to 1.8 cm, 1/2–1 1/3 height of plant. |
basal 1–3, cauline 2–6, straw-colored; auricles absent; blade 10–40 cm x (3–)7–12 mm. |
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Inflorescences | solitary flowers. |
panicles or racemes of 20–50 heads, 2–14 cm, erect or ascending branches; primary bract erect; heads 15–70-flowered, obovoid to globose, 7–11 mm diam. |
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Flowers | 2-merous; : tepals 4(–6), erect to recurved at maturity, reddish, 1.5–3 × 0.5–1.2 mm; outer and outer series nearly equal, apex rounded to acute; stamens 2(–3), filaments 0.5–1.4 mm, anthers 0.3–0.7 mm; style 0.1–0.4 mm, stigma 2(–3), 0.3–1 mm. |
tepals green to brown or reddish brown, lanceolate, 2.4–3.7 mm, nearly equal, apex acuminate; stamens 6; anthers ½1/2 to equal filament length. |
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Capsules | reddish, 2–- or 3-locular, obovoid to ellipsoid or oblate, 1.9–3.5 × 1–2 mm. |
slightly exserted, chestnut to dark brown, 1-locular, ellipsoid, 2.4–3.8 mm, apex acuminate, not beaked. |
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Seeds | ovoid to oblate, 0.3–0.55 mm. |
elliptic to obovate, 0.4–0.6 mm, not tailed. |
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2n | = 40. |
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Juncus hemiendytus |
Juncus xiphioides |
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Phenology | Fruiting early summer–fall. | |||||
Habitat | Salt marshes, moist areas, ditches, springs, lake and stream shores | |||||
Elevation | 500–1600 m (1600–5200 ft) | |||||
Distribution |
AZ; CA; NM; NV; UT; Mexico (Baja California)
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
This species and the next (Juncus ensifolius) are closely related and have been treated as members of a single species (J. xiphioides) by Engelmann. Until a study of the complete subgenus is done, we are hesitant to use a varietal name (J. xiphioides var. triandrus) for the widespread western taxon J. ensifolius. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 22, p. 232. | FNA vol. 22. | ||||
Parent taxa | Juncaceae > Juncus > subg. Graminifolii | Juncaceae > Juncus > subg. Ensifolii | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | J. brachystylus, J. brachystylus var. uniflorus, J. triformis var. uniflorus | J. xiphioides var. auratus, J. xiphioides var. littoralis | ||||
Name authority | F. J. Hermann: Leaflets of Western Botany 5: 118. (1948) | E. Meyer: Synopsis Juncorum 50. (1822) | ||||
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