Antennaria dioica

(Linnaeus) Gaertner

Fruct. Sem. Pl. 2: 410. 1791.

Common names: Stoloniferous pussytoes
Basionym: Gnaphalium dioicum Linnaeus Sp. Pl. 2: 850. 1753
Synonyms: Antennaria hyperborea D. Don Antennaria insularis Greene
Treatment appears in FNA Volume 19. Treatment on page 406. Mentioned on page 389, 390, 395.

Dioecious. Plants 3–10 cm. Stolons 2–5 cm. Basal leaves 1-nerved, spatulate or rhombic-spatulate, 3–18 × 3–6 mm, tips mucronate, abaxial faces gray-tomentose, adaxial green-glabrous. Cauline leaves linear, 7–13 mm, not flagged (apices acute). Heads 3–7 in corymbiform arrays. Involucres: staminate 5–6.5 mm; pistillate 5–7 mm. Phyllaries distally dark-pink to light pink or white. Corollas: staminate 3–4 mm; pistillate 4–5 mm. Cypselae 0.5–1 mm, papillate; pappi: staminate 3.5–4.5 mm; pistillate 5–6 mm. 2n = 28.


Phenology: Flowering summer.
Habitat: Dry slopes on tundra
Elevation: 0–600 m

Distribution

V19-654-distribution-map.gif

Alaska (Aleutian Islands), Eurasia

Discussion

Antennaria dioica ranges from the British Isles to Japan and into the Aleutian Islands (R. J. Bayer 2000). It is characterized by glabrous adaxial leaf faces and distally pink or white phyllaries. The circumscription of A. dioica in North America has long been debated; A. marginata of southwestern states bears a remarkable similarity to A. dioica. DNA sequence data (Bayer et al. 1996) indicate that the two taxa are not sisters; they are only distantly related. They are allopatric. Antennaria dioica may be a sexual progenitor of the A. parvifolia complex.

Selected References

None.

Lower Taxa

None.
... more about "Antennaria dioica"
scarious +
mostly ovate +  and lanceovate or linear +
indeterminate +  and determinate +
Randall J. Bayer +
(Linnaeus) Gaertner +
0.3 cm3 mm <br />0.003 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
decurrent +
Gnaphalium dioicum +
compound +  and simple +
spatulate;oblanceolate;spatulate;oblanceolate;linear;lanceolate;elliptic;cuneate +
5-ribbed +, 3-ribbed +  and 2-ribbed +
muriculate +, papillate +  and smooth +
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Stoloniferous pussytoes +
pistillate +  and staminate +
red +, yellow +  and white +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
papillate +
mostly ellipsoid +  and ovoid +
pistillate +  and staminate +
Alaska (Aleutian Islands) +  and Eurasia +
0–600 m +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry slopes on tundra +
in corymbiform , paniculiform , racemiform or subcapitate , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
pistillate +  and staminate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
campanulate;cylindric +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
rarely lanceovate +  and lanceolate +
2-carpellate +
pistillate +  and staminate +
persistent +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering summer. +
Fruct. Sem. Pl. +
bearing subulate enations +, hairy +  and bristly +
flat;convex or ovoid +
exalbuminous +
appendaged +  and truncate +
papillate +
Antennaria hyperborea +  and Antennaria insularis +
Antennaria dioica +
Antennaria +
species +
mucronate +
25 cm250 mm <br />0.25 m <br /> (70 cm700 mm <br />0.7 m <br />) +
4 cm40 mm <br />0.04 m <br /> (25 cm250 mm <br />0.25 m <br />) +