Antennaria parlinii |
Antennaria densifolia |
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Parlin's pussytoes |
denseleaf pussytoes |
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Habit | Dioecious or gynoecious (staminate plants in equal frequencies as pistillates or none in populations, respectively). | Dioecious. | ||||
Plants | 12–35(–45) cm. |
3.5–16 cm. |
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Stolons | 3.5–11(–14) cm (mostly decumbent when young). |
1–2 cm. |
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Basal leaves | 3–5-nerved, obovate-spatulate, obovate, rhombic-obovate, or suborbiculate, 30–95 × 12–45 mm, tips mucronate, faces gray-pubescent to floccose-glabrescent. |
1-nerved, spatulate to cuneate, 3–7 × 2–5 mm, tips mucronate, faces gray-tomentose. |
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Cauline leaves | oblong-lanceolate, 3.5–45 mm, distalmost flagged. |
linear, 2–13 mm, distal flagged. |
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Involucres | staminate 6–9 mm; pistillate (7–)8–13 mm. |
staminate 3–6.5 mm; pistillate 4.5–7.5 mm. |
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Corollas | staminate 3.5–5 mm; pistillate 4–7 mm. |
staminate 2–3.5 mm; pistillate 2.5–4.5 mm. |
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Phyllaries | distally white. |
distally light brown, dark brown, or black. |
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Heads | 4–12(–15) in tight corymbiform arrays. |
2–5 in corymbiform arrays. |
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Cypselae | 1–2 mm, minutely papillate; pappi: staminate 4–5 mm; pistillate 5–8 mm. |
0.8–1.5 mm, glabrous; pappi: staminate 2.5–3.5 mm; pistillate 2.5–3.5 mm. |
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Pistillate | involucres 4.5–7.5 mm. |
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2n | = 56, 84, 70, 112. |
= 28. |
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Antennaria parlinii |
Antennaria densifolia |
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Phenology | Flowering summer. | |||||
Habitat | Subalpine-alpine limestone talus | |||||
Elevation | 700–2800 m (2300–9200 ft) | |||||
Distribution |
AL; AR; CT; DE; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; NE; NH; NJ; NY; OH; OK; PA; RI; SC; SD; TN; TX; VA; VT; WI; WV; MB; NB; NS; ON; QC
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AK; MT; BC; NT; YT |
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Discussion | Subspecies 2 (2 in the flora). The Antennaria parlinii complex consists of two fairly distinct subspecies that differ in induments of basal leaves (tomentose in subsp. fallax; glabrous in subsp. parlinii) and other characters (R. J. Bayer and G. L. Stebbins 1982). Antennaria parlinii is the most common eastern North American species (Bayer and Stebbins 1982, 1983). This complex of polyploid sexual and apomictic populations is the result of multiple hybridizations among sexual diploid species including A. plantaginifolia, A. racemosa, and A. solitaria (Bayer 1985b; Bayer and D. J. Crawford 1986). A. Cronquist (1945; H. A. Gleason and Cronquist 1991) included A. parlinii within his circumscription of A. plantaginifolia. By not including the hybrid polyploiid within the circumscription of a single one of its sexual progenitors, the circumscription here better portrays the evolutionary relationships between A. parlinii and its sexual progenitors. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Antennaria densifolia is found on limestone talus below treeline in the MacKenzie, Richardson, and Ogilvie mountains of the District of MacKenzie and Yukon Territory and in Granite County, Montana (R. J. Bayer 1989c). It differs from A. aromatica in being non-glandular and in other characters. Herbarium specimens (in DAO) from British Columbia that morphologically appear to be a strictly gynoecious form of A. densifolia may be apomicts related to A. alpina that are derived from A. densifolia, a sexual progenitor of the complex. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 19, p. 402. | FNA vol. 19, p. 411. | ||||
Parent taxa | Asteraceae > tribe Gnaphalieae > Antennaria | Asteraceae > tribe Gnaphalieae > Antennaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | A. ellyae | |||||
Name authority | Fernald: Gard. & Forest 10: 284. (1897) | A. E. Porsild: Bull. Natl. Mus. Canada 101: 26. (1945) | ||||
Web links |