Antennaria rosea |
Antennaria marginata |
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Antennaire rosée, rosy everlasting, rosy pussytoes |
white margined pussytoes, white-margined everlasting, whitemargin pussytoes |
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Habit | Gynoecious (staminate plants uncommon). | Dioecious or gynoecious (staminate plants in equal frequency as pistillates or none in populations, respectively). | ||||||||||||
Plants | 4–30 cm. |
5–20 cm (stems sometimes stipitate-glandular, especially in dioecious diploids). |
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Stolons | 1–7 cm. |
2–7 cm (woolly). |
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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, spatulate, 15–20 × 4–6 mm, tips mucronate, abaxial faces gray-tomentose, adaxial green-glabrous (margins white woolly). |
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Cauline leaves | linear, 6–36 mm, usually not flagged (apices acute to subulate or with lanceolate flags). |
linear, 7–16 mm, (apices acute) not flagged. |
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Involucres | staminate unknown; pistillate 4–10 mm. |
staminate 4.5–7 mm; pistillate 5–7(–9) mm. |
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Corollas | staminate unknown; pistillate 2.5–6 mm. |
staminate 3–5 mm; pistillate 4.5–6.5 mm. |
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Phyllaries | distally brown, cream, gray, green, pink, red, white, or yellow (apices acute or erose-obtuse). |
(relatively wide), distally white (apices acuminate). |
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Heads | 3–20 in corymbiform arrays. |
5–8 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. |
0.8–2 mm, glabrous or slightly papillate; pappi: staminate 3.5–5.5 mm; pistillate 5.5–8.5 mm. |
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2n | = 42, 56, (70). |
= 28, 56, 84, 112, 140. |
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Antennaria rosea |
Antennaria marginata |
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Phenology | Flowering summer. | |||||||||||||
Habitat | Moist forests, slopes and tops of ridges under Douglas fir, ponderosa pine, Engelmann spruce or Gambel oaks, openings in the forests | |||||||||||||
Elevation | 1500–2900 m (4900–9500 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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AZ; CA; CO; NM; TX; Mexico (Chihuahua, Coahuila)
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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 marginata has rims of white hairs (from the abaxial faces) around its adaxially glabrous leaves. It has both dioecious and gynoecious populations and cytotypes ranging from diploid to decaploid (R. J. Bayer and G. L. Stebbins 1987). It is probably a primary sexual progenitor of the A. parvifolia polyploid complex; the two taxa sometimes overlap morphologically; they differ in induments of basal leaves. Antennaria marginata may also be a contributor to the parentage of the A. howellii and A. rosea agamic complexes. (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. 405. | ||||||||||||
Parent taxa | Asteraceae > tribe Gnaphalieae > Antennaria | Asteraceae > tribe Gnaphalieae > Antennaria | ||||||||||||
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Synonyms | A. dioica var. marginata, A. fendleri, A. marginata var. glandulifera, A. peramoena | |||||||||||||
Name authority | Greene: Pittonia 3: 281. (1898) | Greene: Pittonia 3: 290. (1898) | ||||||||||||
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