Antennaria rosea |
Antennaria arcuata |
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Antennaire rosée, rosy everlasting, rosy pussytoes |
box pussytoes, meadow pussytoes |
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Habit | Gynoecious (staminate plants uncommon). | Dioecious. | ||||||||||||
Plants | 4–30 cm. |
5–15(–20) cm (stems woolly). |
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Stolons | 1–7 cm. |
4–10 cm (arched). |
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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. |
1–3-nerved, narrowly to broadly spatulate, or narrowly rhombic-obovate, 20–45 × 3–15 mm, tips mucronate, faces densely white-woolly. |
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Cauline leaves | linear, 6–36 mm, usually not flagged (apices acute to subulate or with lanceolate flags). |
linear, (2–)5–40 mm, not flagged. |
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Involucres | staminate unknown; pistillate 4–10 mm. |
staminate 3–5 mm; pistillate 4.5–6(–7) mm. |
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Corollas | staminate unknown; pistillate 2.5–6 mm. |
staminate 2.5–4 mm; pistillate 3.5–5 mm. |
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Phyllaries | distally brown, cream, gray, green, pink, red, white, or yellow (apices acute or erose-obtuse). |
distally whitish (mostly staminate) or grayish stramineous to light brown. |
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Heads | 3–20 in corymbiform arrays. |
(4–)7–25, in racemiform to paniculiform or corymbiform 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, glabrous; pappi: staminate 3–4.5 mm; pistillate 4–6 mm. |
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2n | = 42, 56, (70). |
= 28. |
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Antennaria rosea |
Antennaria arcuata |
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Phenology | Flowering summer. | |||||||||||||
Habitat | Moist alkaline basins in sagebrush steppe | |||||||||||||
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; WY
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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 arcuata is known from three widely disjunct areas in Blaine County, Idaho; Elko County, Nevada; and Fremont County, Wyoming (R. J. Bayer 1992). It is characterized by arching stolons and white-woolly indument (Bayer) and is not easily confused with other species of Antennaria. (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. 396. | ||||||||||||
Parent taxa | Asteraceae > tribe Gnaphalieae > Antennaria | Asteraceae > tribe Gnaphalieae > Antennaria | ||||||||||||
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Subordinate taxa | ||||||||||||||
Name authority | Greene: Pittonia 3: 281. (1898) | Cronquist: Leafl. W. Bot. 6: 41. (1950) | ||||||||||||
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