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Whitney's Bristleweed

Hazardia whitneyi (A. Gray) Greene

Description

provided by eFloras
Perennials (from woody rootstocks) or subshrubs, 20–50 cm. Stems scabrid to sparsely tomentulose, distally stipitate-glandular. Leaves sessile; blades widely oblong to oblanceolate, 25–50 × 7–16 mm, subcoriaceous, bases subclasping (distal), margins serrate, apices acute, faces glabrous, sparsely puberulent, or glandular-scabrid. Heads borne singly or in spiciform, racemiform, or cymiform arrays. Involucres campanulate, 11–13 × 8–12 mm. Phyllaries sometimes recurved, linear-lanceolate, apices acute, herbaceous and stipitate-glandular. Ray florets 0 or 5–18, sterile; corollas longer than involucres, conspicuous. Disc florets 15–30; corollas 8–10 mm. Cypselae 5–10 mm, glabrous.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 20: 446, 447 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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eFloras.org
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Synonym

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Haplopappus whitneyi A. Gray, Proc. Amer. Acad. Arts 7: 353. 1868 (as Aplopappus)
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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: 446, 447 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

Hazardia whitneyi

provided by wikipedia EN

Hazardia whitneyi, common name Whitney's bristleweed,[3] is a North American species of shrub in the daisy family. It has been found only in the states of Oregon and California in the western United States.[4][5]

Hazardia whitneyi is a perennial herb or subshrub up to 50 cm (20 in) tall. The plant produces numerous flower heads in a dense, elongated array at the top of the plant. Each head contains 8-10 disc flowers but no ray flowers. The species sometimes grows on serpentine soils.[6]

Varieties[2][6]
  • Hazardia whitneyi var. discoidea (J.T.Howell) W.D.Clark - no ray flowers - California, Oregon in Klamath Mountains, southern Cascades, and north Coast Ranges
  • Hazardia whitneyi var. whitneyi - 5-18 ray flowers per head - California, primarily in Sierra Nevada

References

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Hazardia whitneyi: Brief Summary

provided by wikipedia EN

Hazardia whitneyi, common name Whitney's bristleweed, is a North American species of shrub in the daisy family. It has been found only in the states of Oregon and California in the western United States.

Hazardia whitneyi is a perennial herb or subshrub up to 50 cm (20 in) tall. The plant produces numerous flower heads in a dense, elongated array at the top of the plant. Each head contains 8-10 disc flowers but no ray flowers. The species sometimes grows on serpentine soils.

Varieties Hazardia whitneyi var. discoidea (J.T.Howell) W.D.Clark - no ray flowers - California, Oregon in Klamath Mountains, southern Cascades, and north Coast Ranges Hazardia whitneyi var. whitneyi - 5-18 ray flowers per head - California, primarily in Sierra Nevada
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Wikipedia authors and editors
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wikipedia EN