Antennaria marginata

Greene

Pittonia 3: 290. 1898

Common names: Whitemargin pussytoes
Synonyms: Antennaria dioica var. marginata (Greene) Jepson Antennaria fendleri Greene Antennaria marginata var. glandulifera A. Nelson Antennaria peramoena unknown
Treatment appears in FNA Volume 19. Treatment on page 405. Mentioned on page 390, 392, 395, 404, 406, 409.
Dioecious or gynoecious (staminate plants in equal frequency as pistillates or none in populations, respectively). Plants 5–20 cm (stems sometimes stipitate-glandular, especially in dioecious diploids). Stolons 2–7 cm (woolly). Basal leaves 1–3-nerved, spatulate, 15–20 × 4–6 mm, tips mucronate, abaxial faces gray-tomentose, adaxial green-glabrous (margins white woolly). Cauline leaves linear, 7–16 mm, (apices acute) not flagged. Heads 5–8 in corymbiform arrays. Involucres: staminate 4.5–7 mm; pistillate 5–7(–9) mm. Phyllaries (relatively wide), distally white (apices acuminate). Corollas: staminate 3–5 mm; pistillate 4.5–6.5 mm. Cypselae 0.8–2 mm, glabrous or slightly papillate; pappi: staminate 3.5–5.5 mm; pistillate 5.5–8.5 mm. 2n = 28, 56, 84, 112, 140.

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

Distribution

V19-653-distribution-map.gif

Ariz., Calif., Colo., N.Mex., Tex., Mexico (Chihuahua, Coahuila).

Discussion

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.

References

None.

Lower Taxa

No lower taxa listed.

Facts about "Antennaria marginata"
AuthorRandall J. Bayer +
AuthorityGreene +
Common nameWhitemargin pussytoes +
DistributionAriz. +, Calif. +, Colo. +, N.Mex. +, Tex. +, Mexico (Chihuahua + and Coahuila). +
Elevation1500–2900 m +
HabitatMoist forests, slopes and tops of ridges under Douglas fir, ponderosa pine, Engelmann spruce or Gambel oaks, openings in the forests +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering summer. +
Publication titlePittonia +
Publication year1898 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse grained fna xml/V19-20-21/V19 653.xml +
SynonymsAntennaria dioica var. marginata +, Antennaria fendleri +, Antennaria marginata var. glandulifera + and Antennaria peramoena +
Taxon familyAsteraceae +
Taxon nameAntennaria marginata +
Taxon parentAntennaria +
Taxon rankspecies +
VolumeVolume 19 +