Antennaria rosea |
Antennaria stenophylla |
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Antennaire rosée, rosy everlasting, rosy pussytoes |
narrow-leaf pussytoes, narrowleaf everlasting |
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Habit | Gynoecious (staminate plants uncommon). | Dioecious. | ||||||||||||
Plants | 4–30 cm. |
(3–)10–15 cm. |
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Stolons | 1–7 cm. |
none. |
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Basal leaves | 1-nerved, 8–40 × 2–10 mm, spatulate, oblanceolate, or cuneate, tips mucronate, faces usually gray-pubescent, adaxial sometimes green-glabrous. |
1-nerved, linear to narrowly oblanceolate, 15–50 × 1–2(–4) mm, tips acute, not flagged, faces ± gray tomentose. |
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Cauline leaves | linear, 6–36 mm, usually not flagged (apices acute to subulate or with lanceolate flags). |
(gradually reduced distally) narrowly linear, 5–60 mm, distalmost flagged. |
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Involucres | staminate unknown; pistillate 4–10 mm. |
staminate 4–5 mm; pistillate 4–6.5 mm. |
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Corollas | staminate unknown; pistillate 2.5–6 mm. |
staminate 2.5–3.5 mm; pistillate 2.5–4 mm. |
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Phyllaries | distally brown, cream, gray, green, pink, red, white, or yellow (apices acute or erose-obtuse). |
distally light brown, dingy brown, or olivaceous (apices acute-acuminate). |
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Heads | 3–20 in corymbiform arrays. |
2–8(–10) in subcapitate arrays. |
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Cypselae | 0.7–1.8 mm, glabrous or papillate; pappi: staminate unknown; pistillate 3.5–6.5 mm. |
1–1.8 mm, glandular-puberulent; pappi: staminate 3–4.5 mm (bristles barbellate at tips); pistillate 3–4.5 mm. |
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2n | = 42, 56, (70). |
= 56. |
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Antennaria rosea |
Antennaria stenophylla |
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Phenology | Flowering in late spring–early summer. | |||||||||||||
Habitat | Dry, often sagebrush (Artemisia) covered hillsides and dry margins around seasonally moist depressions in sagebrush steppe of the Great Basin and Columbia Plateau | |||||||||||||
Elevation | 1500–2300 m (4900–7500 ft) | |||||||||||||
Distribution |
AK; AZ; CA; CO; ID; ME; MI; MN; MT; ND; NM; NV; OR; SD; UT; WA; WY; AB; BC; MB; NL; NT; NU; ON; QC; SK; YT
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ID; NV; OR; WA
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Discussion | Subspecies 4 (4 in the flora). Antennaria rosea is the most widespread Antennaria of North America, occurring in dry to moist habitats from near sea level to the alpine zone. The A. rosea polyploid agamic complex is one of the more morphologically diverse complexes of North American Antennaria. It occurs from the western cordillera of North America from southern California, Arizona, and New Mexico north to subarctic Alaska and east to Greenland and, disjunctly, in the Canadian maritime provinces, eastern Quebec, and immediately north of and adjacent to Lake Superior (R. J. Bayer et al. 1991). Antennaria chilensis (including A. chilensis var. magellanica) is a Patagonian endemic that morphologically fits within the circumscription of A. rosea and may well be an amphitropical disjunct member of the complex. Antennaria rosea is taxonomically confusing; it includes agamospermous microspecies that have been recognized as distinct taxonomic species. Morphometric and isozyme analyses have demonstrated that the primary source of morphologic variability in the complex derives from six sexually reproducing progenitors, A. aromatica, A. corymbosa, A. pulchella, A. microphylla, A. racemosa, and A. umbrinella (R. J. Bayer 1989b, 1990b, 1990c). Additionally, three other sexually reproducing species, A. marginata, A. suffrutescens, and A. rosulata, may have contributed to the genetic complexity of the A. rosea complex (Bayer 1990b). Here, four reasonably distinct subspecies are recognized within the complex. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Antennaria stenophylla is a xerophyte in the Argenteae group. It is distinguished by relatively narrow leaves, heads in subcapitate clusters, and light brown, dingy brown, or olivaceous phyllary tips. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 19, p. 408. | FNA vol. 19, p. 398. | ||||||||||||
Parent taxa | Asteraceae > tribe Gnaphalieae > Antennaria | Asteraceae > tribe Gnaphalieae > Antennaria | ||||||||||||
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Subordinate taxa | ||||||||||||||
Synonyms | A. alpina var. stenophylla, A. leucophaea | |||||||||||||
Name authority | Greene: Pittonia 3: 281. (1898) | (A. Gray) A. Gray: Proc. Amer. Acad. Arts 17: 213. (1882) | ||||||||||||
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