Agoseris glauca

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Agoseris glauca
Agoseris glauca 8503.jpg
Mount Rainier National Park
Status TNC G5.svg
Secure  (NatureServe)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Agoseris
Species:
A. glauca
Binomial name
Agoseris glauca
Synonyms [1]
Synonymy
  • Agoseris agrestisOsterh.
  • Agoseris altissimaRydb.
  • Agoseris apiculataGreene
  • Agoseris aspera(Rydb.) Rydb.
  • Agoseris dasycarpaGreene
  • Agoseris eisenhoweriB.Boivin
  • Agoseris isomerisGreene
  • Agoseris laceraGreene
  • Agoseris lanulosaGreene
  • Agoseris lapathifoliaGreene
  • Agoseris longissimaGreene
  • Agoseris longulaGreene
  • Agoseris maculataRydb.
  • Agoseris microdontaGreene
  • Agoseris proceraGreene
  • Agoseris pubescensRydb.
  • Agoseris pumila(Nutt.) Rydb.
  • Agoseris scorzonerifolia(Schrad.) Greene
  • Agoseris turbinataRydb.
  • Agoseris vestitaGreene
  • Agoseris vicinalisGreene
  • Agoseris villosaRydb.
  • Ammogeton scorzonerifoliusSchrad.
  • Microrhynchus glaucus(Pursh) D.C.Eaton
  • Tragopogon glaucus(Pursh) Steud.
  • Troximon glaucumPursh
  • Troximon pubescens(Rydb.) A.Nelson
  • Troximon pumilumNutt.
  • Troximon villosum(Rydb.) A.Nelson

Agoseris glauca is a species of flowering plant in the family Asteraceae known by the common names false dandelion, [2] pale agoseris, prairie agoseris, and short-beaked agoseris. It is native to western North America.

Contents

Description

Agoseris glauca is a perennial herb which varies in general appearance. Growing up to 70 centimeters (28 inches), [3] it produces a basal patch of leaves of various shapes which may be as long as the plant is high, [4] but are typically up to 35 cm (14 in). [3]

There is no stem, but from May to September [3] the plant flowers in a stemlike inflorescence which is sometimes erect, reaching heights near .5 metres (1+12 feet) or taller. The flower head is 1–3 cm (121+14 in) wide with layers of pointed phyllaries. The head is ligulate, bearing many yellow ray florets but no disc florets. [4] The rays may become pinkish with age. [2]

The fruit is an achene with a body up to a centimeter long and a pappus, which may be almost 2 cm in length. [4]

Similar species

Other species in the genus known as false dandelion or mountain dandelion, as well as true dandelions, can be distinguished from A. glauca by differences in their fruit. [3]

Taxonomy

Varieties [1] [4]

Distribution and habitat

The plant is native to western and northwestern North America from Alaska east to the Northwest Territories and Ontario, southeast to California, Arizona, and New Mexico. [6] It grows in many habitat types, usually those which are non-forested. [2]

Uses

The plant contains a bitter milky juice, which solidifies into a substance that can be chewed as gum; this may have been done by some Plains Indians. [2]

Related Research Articles

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<i>Enceliopsis nudicaulis</i> Species of flowering plant

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<i>Agoseris retrorsa</i> Species of flowering plant

Agoseris retrorsa is a North American species of flowering plant in the family Asteraceae known by the common name spearleaf agoseris or spearleaf mountain dandelion.

<i>Nothocalais alpestris</i> Species of flowering plant

Nothocalais alpestris is a species of flowering plant in the family Asteraceae known by the common name alpine lake false dandelion. It is native to the Cascade Range, Sierra Nevada and other mountains from northern Washington to central California, where it grows in subalpine forests and meadows, most commonly at 1,200–2,700 m (4,000–9,000 ft) elevation.

<i>Nothocalais troximoides</i> Species of flowering plant

Nothocalais troximoides is a species of flowering plant in the family Asteraceae known by the common name sagebrush false dandelion. It is native to western North America, including British Columbia and the northwestern United States.

<i>Agoseris heterophylla</i> Species of flowering plant

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<i>Packera werneriifolia</i> Species of flowering plant

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<i>Tetraneuris acaulis</i> Species of flowering plant

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<i>Agoseris monticola</i> Species of flowering plant

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Agoseris parviflora is a North American species of flowering plants in the family Asteraceae known by the common name Steppe agoseris or sagebrush agoseris or false dandelion. It is found in the Western United States primarily in the Great Basin and the region drained by the Colorado River but also in the eastern foothills of the Sierra Nevada and on the western edge of the Great Plains. Its range extends from eastern Oregon and eastern California to Wyoming, Colorado, and New Mexico, with a few isolated populations in western Kansas and western South Dakota.

References

  1. 1 2 The Plant List search for Agoseris glauca
  2. 1 2 3 4 Taylor, Ronald J. (1994) [1992]. Sagebrush Country: A Wildflower Sanctuary (rev. ed.). Missoula, MT: Mountain Press Pub. Co. p. 160. ISBN   0-87842-280-3. OCLC   25708726.
  3. 1 2 3 4 Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. pp. 353–354. ISBN   978-0-375-40233-3.
  4. 1 2 3 4 Flora of North America, Agoseris glauca
  5. CalFlora Database: Agoseris glauca var. glauca
  6. CalFlora taxon report, University of California: Agoseris glauca