Antennaria rosea |
Antennaria microphylla |
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Antennaire rosée, rosy everlasting, rosy pussytoes |
little-leaf pussytoes, pink pussytoes, rosy pussytoes, small pussytoes, white pussytoes |
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Habit | Gynoecious (staminate plants uncommon). | Dioecious. | ||||||||||||
Plants | 4–30 cm. |
9–30 cm (stems stipitate-glandular distally). |
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Stolons | 1–7 cm. |
1–5 cm. |
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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, spatulate, 6–16 × 2–6 mm, tips mucronate, faces silvery gray-pubescent. |
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Cauline leaves | linear, 6–36 mm, usually not flagged (apices acute to subulate or with lanceolate flags). |
linear, 5–25 mm, not flagged (apices acute). |
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Involucres | staminate unknown; pistillate 4–10 mm. |
staminate 5–6.5 mm; pistillate 5.5–7 mm. |
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Corollas | staminate unknown; pistillate 2.5–6 mm. |
staminate 2.5–3 mm; pistillate 3–4.3 mm. |
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Phyllaries | distally brown, cream, gray, green, pink, red, white, or yellow (apices acute or erose-obtuse). |
distally bright white to light yellow. |
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Heads | 3–20 in corymbiform arrays. |
6–13 in corymbiform arrays. |
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Cypselae | 0.7–1.8 mm, glabrous or papillate; pappi: staminate unknown; pistillate 3.5–6.5 mm. |
0.7–1.2 mm, glabrous or sparingly papillate; pappi: staminate 3–4 mm; pistillate 3–5 mm. |
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2n | = 42, 56, (70). |
= 28. |
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Antennaria rosea |
Antennaria microphylla |
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Phenology | Flowering early–mid summer. | |||||||||||||
Habitat | Moist open areas, flood plains of streams, margins of alkaline depressions, lower montane to subalpine (subarctic) | |||||||||||||
Elevation | 0–3200 m (0–10500 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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AK; AZ; CA; CO; ID; MN; MT; ND; NE; NM; NV; OR; SD; UT; WA; WY; AB; BC; MB; NT; NU; ON; QC; SK; YT
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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 microphylla is a primary sexual progenitor of the A. rosea polyploid agamic complex (R. J. Bayer 1990b). A. Cronquist (1955) included A. rosea within his circumscription of A. microphylla. It is preferable to recognize sexual diploids as distinct from their morphologically discrete hybrid apomictic derivatives. Antennaria microphylla is always dioecious and has stems distally stipitate-glandular and white phyllaries; A. rosea is always gynoecious and has stems without glandular hairs and phyllaries only occasionally white. Some authors (A. E. Porsild 1950; E. H. Moss 1959; Porsild and W. J. Cody 1980) have recognized A. nitida as distinct; comparisons of the nomenclatural types of the two show that they are conspecific. Antennaria microphylla has allelopathic properties (G. D. Manners and D. S. Galitz 1985). (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. 407. | ||||||||||||
Parent taxa | Asteraceae > tribe Gnaphalieae > Antennaria | Asteraceae > tribe Gnaphalieae > Antennaria | ||||||||||||
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Synonyms | A. bracteosa, A. microphylla var. solstitialis, A. nitida, A. rosea var. nitida, A. solstitialis | |||||||||||||
Name authority | Greene: Pittonia 3: 281. (1898) | Rydberg: Bull. Torrey Bot. Club 24: 303. (1897) | ||||||||||||
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