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San Pedro Snakeweed

Gutierrezia petradoria (Welsh & Goodrich) S. L. Welsh

Comments

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Gutierrezia petradoria is distinctive, especially in its herbaceous form. The basal leaves are persistent, and the relatively large ray corollas are showy.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 20: 90, 93 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Description

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Perennials, 10–40 cm. Stems minutely scabro-hirtellous. Leaves: basal persistent at flowering; cauline blades mostly 3- or 5-nerved, linear-spatulate to linear, proximal 1–3(–4) mm wide, narrower distally. Heads borne singly or (2–4) in loose arrays. Involucres broadly turbinate to obconic, 4–7 mm diam. Phyllary apices flat, ± swollen. Ray florets (4–)5–10; corollas yellow, 5–8(–10) mm. Disc florets 15–23 (bisexual and fertile or functionally staminate). Cypselae 1.5–3(–3.5) mm, faces without oil cavities, loosely strigose (hair apices acute); pappi of 1–2 series of scales (0.5–)1–2.2 mm. 2n = 8.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 20: 90, 93 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
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eFloras

Synonym

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Xanthocephalum petradoria S. L. Welsh & S. Goodrich, Brittonia 33: 301. 1981
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 20: 90, 93 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Gutierrezia petradoria

provided by wikipedia EN

Gutierrezia petradoria is a species of flowering plant in the family Asteraceae known by the common names San Pedro snakeweed and goldenrod snakeweed[2][3][4]

Distribution

The plant is endemic to western Utah, located the Southwestern United States.[5] It is native to the Lower Sevier River watershed, within Juab County and Millard County.[6]

Description

Gutierrezia petradoria is a perennial herb to woody subshrub, growing up to 40 cm (16 in) in height.

At the end of each branch there is an inflorescence of one or a few flower heads. The heads are larger than for most of the species in the genus. The head contains 5-13 disc florets with 4-10 yellow ray florets around the edge. The ray flowers are up to 10 mm (0.39 in) long, much larger and showier than in the case of most other species in the genus.[2]

References

  1. ^ The Plant List, Gutierrezia petradoria (S.L.Welsh & Goodrich) S.L.Welsh
  2. ^ a b Flora of North America, Gutierrezia petradoria (S. L. Welsh & S. Goodrich) S. L. Welsh, 1983. Goldenrod snakeweed
  3. ^ USDA, NRCS (n.d.). "Gutierrezia petradoria". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 19 July 2015.
  4. ^ Albee, B.J., L.M. Shultz, and S. Goodrich. "Atlas of the vascular plants of Utah" − Utah Museum Natural History Occasional Publication 7, 1988, Salt Lake City, Utah.
  5. ^ Biota of North America Program 2014 county distribution map
  6. ^ Natureserve.org (Version 7.1): Comprehensive Report for Gutierrezia petradoria

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Gutierrezia petradoria: Brief Summary

provided by wikipedia EN

Gutierrezia petradoria is a species of flowering plant in the family Asteraceae known by the common names San Pedro snakeweed and goldenrod snakeweed

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cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
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wikipedia EN