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Lanceleaf Goldenweed

Pyrrocoma lanceolata (Hook.) Greene

Comments

provided by eFloras
Pyrrocoma lanceolata has the widest range of any species and exhibits much variability in habit and head size. A number of infraspecific taxa have been recognized in the past; only two were retained by R. A. Mayes (1976).
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 20: 414, 417, 419, 420 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

provided by eFloras
Plants 20–50 cm. Stems 1–10, decumbent to ascending or erect, red-tinged, sometimes branched, sparsely leafy, ± tomentulose or glabrous, sometimes stipitate-glandular. Leaves: basal blades lanceolate or rarely oblanceolate to narrowly elliptic, 50–300 × 8–30 mm, margins sharply dentate, eciliate, apices acute, spinulose; cauline sessile, lanceolate, bases clasping; faces ± tomentulose to glabrate or glabrous, sometimes stipitate-glandular. Heads (1–)4–20(–50) in corymbiform or paniculiform arrays. Peduncles 0–6 cm. Involucres hemispheric, 7–10 × 10–18 mm. Phyllaries in 3–4 series, linear-lanceolate to lanceolate, 3–11 mm, unequal, bases white-chartaceous, margins entire, eciliate, apices conspicuously green, faces glabrous or tomentulose, rarely stipitate-glandular. Ray florets 18–45; corollas 6–11 mm. Disc florets 20–100; corollas 5–7 mm. Cypselae oblong, 3.5–4.5 mm, 4-angled, faces striate, sericeous; pappi tawny, 5–7 mm.
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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: 414, 417, 419, 420 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
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eFloras

Synonym

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Donia lanceolata Hooker, Fl. Bor.-Amer. 2: 25. 1834; Haplopappus lanceolatus (Hooker) Torrey & A. Gray
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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: 414, 417, 419, 420 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

Pyrrocoma lanceolata

provided by wikipedia EN

Pyrrocoma lanceolata is a species of flowering plant in the family Asteraceae known by the common name lanceleaf goldenweed.[1] It is native to western North America from central Canada to northeastern California to Colorado, where it grows in many types of habitat, including disturbed places and areas with wet, alkali soils. It is a widespread and variable plant. It is a perennial herb growing one or more stems up to about half a meter long. The stems are decumbent or upright, reddish, usually somewhat hairy to quite woolly, and glandular toward the ends of the stems. The largest leaves are at the base of the plant, each measuring up to 30 centimeters in maximum length. They are generally lance-shaped with sawtoothed edges. The inflorescence bears several, up to 50, flower heads lined with reddish to green phyllaries. Each contains yellow disc florets and ray florets. The fruit is an achene up to a centimeter long including its pappus.

References

  1. ^ USDA, NRCS (n.d.). "Pyrrocoma lanceolata". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 16 October 2015.

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Pyrrocoma lanceolata: Brief Summary

provided by wikipedia EN

Pyrrocoma lanceolata is a species of flowering plant in the family Asteraceae known by the common name lanceleaf goldenweed. It is native to western North America from central Canada to northeastern California to Colorado, where it grows in many types of habitat, including disturbed places and areas with wet, alkali soils. It is a widespread and variable plant. It is a perennial herb growing one or more stems up to about half a meter long. The stems are decumbent or upright, reddish, usually somewhat hairy to quite woolly, and glandular toward the ends of the stems. The largest leaves are at the base of the plant, each measuring up to 30 centimeters in maximum length. They are generally lance-shaped with sawtoothed edges. The inflorescence bears several, up to 50, flower heads lined with reddish to green phyllaries. Each contains yellow disc florets and ray florets. The fruit is an achene up to a centimeter long including its pappus.

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