Juncus hemiendytus |
Juncus drummondii |
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blood rush, dwarf rush, Herman's dwarf rush, Hermann's dwarf rush, juncus hemiendytus |
Drummond rush, Drummond's rush, three-flower rush |
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Habit | Herbs, annual, cespitose, 0.03–0.36 dm. | Herbs, perennial, strongly tufted, to 4 dm. | ||||
Rhizomes | densely short-branched. |
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Culms | to 5. |
terete. |
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Cataphylls | several. |
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Leaves | to 1.8 cm, 1/2–1 1/3 height of plant. |
blade absent or rarely present, to 1 cm. |
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Inflorescences | solitary flowers. |
2–5-flowered, loosely compact; primary bract usually longer than inflorescence. |
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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. |
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. |
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Capsules | reddish, 2–- or 3-locular, obovoid to ellipsoid or oblate, 1.9–3.5 × 1–2 mm. |
brown to chestnut brown, 3-locular, oblate, 4.5–7(–8) × 1.8–2.2 mm, nearly equal to or exceeding perianth. |
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Seeds | ovoid to oblate, 0.3–0.55 mm. |
amber, body oblate, 0.5–0.6 mm. |
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Juncus hemiendytus |
Juncus drummondii |
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Phenology | Flowering and fruiting summer. | |||||
Habitat | Exposed slopes, stream banks, and meadows in montane and alpine areas | |||||
Elevation | 1600–4000 m (5200–13100 ft) | |||||
Distribution |
AK; AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC; NT; YT
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. (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. Genuini | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | J. brachystylus, J. brachystylus var. uniflorus, J. triformis var. uniflorus | J. compressus var. subtriflorus, J. drummondii var. longifructus, J. drummondii var. subtriflorus, J. subtriflorus, J. pauperculus | ||||
Name authority | F. J. Hermann: Leaflets of Western Botany 5: 118. (1948) | E. Meyer: in C. F. von Ledebour, Flora Rossica 4: 235. (1853) | ||||
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