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Shasta Chaenactis

Chaenactis suffrutescens A. Gray

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Chaenactis suffrutescens is known from the southern and eastern Klamath Ranges and northern Coast Ranges of Trinity and Siskiyou counties (nearly to Oregon). It is sometimes cultivated in rock gardens and may be found outside its native range. Small forms of C. suffrutescens from southern Trinity County approach C. nevadensis in habit (see discussion there).
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 403, 404, 405 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description

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Perennials or subshrubs (10–)25–45(–60) cm (sometimes cespitose, not matted); proximal indument (especially stems) persistent, whitish, densely lanuginose or pannose. Stems mostly 5–15+, usually erect. Leaves usually ± cauline, sometimes ± basal, 5–10 cm; largest blades lance-ovate or deltate, ± plane, 1–2-pinnately lobed; primary lobes mostly 2–5 pairs, ± remote, ultimate lobes ± plane. Heads mostly 1–3 per stem. Peduncles ascending to erect, (5–)10–20 cm. Involucres ± cylindric. Phyllaries: longest 14–18 mm; outer predominantly stipitate-glandular (other indument none or sparse), apices ± squarrose, pliant. Corollas 8.5–10 mm. Cypselae 7–9 mm; pappi: longest scales 7–9 mm. 2n = 12.
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cc-by-nc-sa-3.0
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 403, 404, 405 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
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eFloras.org
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eFloras

Synonym

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Chaenactis suffrutescens var. incana Stockwell
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 403, 404, 405 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

Comprehensive Description

provided by North American Flora
Chaenactis suffrutescens A. Gray, Proc. Am. Acad. 16: 100
1880.
A suffruticose perennial; stem 3-4 dm. high from a decumbent woody base, white-floc cose; leaves 5-10 cm. long, white-floccose, pinnatifid or sometimes bipinnatifid into linear divisions; peduncles 1-2 dm. long, glandular-puberulent; involucre 18-20 mm. high and about as broad; bracts linear, attenuate, glandular-puberulent; corollas whitish, 7 mm. long, all alike, puberulent; achenes 6 mm. long, densely hirsute; squamellae 8-12, linear, 5 mm. long
Type locality: Rocky banks of the Sacramento below Mt. Shasta. Distribution: Valleys of northern California.
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bibliographic citation
Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
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Chaenactis suffrutescens

provided by wikipedia EN

Chaenactis suffrutescens is a species of flowering plant in the aster family known by the common name Shasta chaenactis.[2]

It is native to California, where it is known only from Shasta and Trinity Counties in the far northern part of the state, and also to Oregon, where it has been found in Josephine County.[3] It grows in coniferous forests and other habitat in the Klamath Mountains and the southernmost Cascade Range mountains, sometimes on serpentine soils.[2]

Description

Chaenactis suffrutescens is a spreading subshrub producing several branching erect stems reaching up to about 50 cm (20 inches) tall. The leaves are several centimeters long and divided into several lobes which are subdivided into smaller lobes. The leaves are coated in feltlike white woolly fibers.[4]

The inflorescence is a cylindrical flower head atop an erect, stout peduncle. Each head is lined with glandular, hairy phyllaries and contains several white or pink-tinged disc florets with protruding anthers. The disc florets have ray-like lobes on their corollas, but there are no true ray florets.[4]

The fruit is an achene over a centimeter long including the pappus of scales.[4]

References

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Chaenactis suffrutescens: Brief Summary

provided by wikipedia EN

Chaenactis suffrutescens is a species of flowering plant in the aster family known by the common name Shasta chaenactis.

It is native to California, where it is known only from Shasta and Trinity Counties in the far northern part of the state, and also to Oregon, where it has been found in Josephine County. It grows in coniferous forests and other habitat in the Klamath Mountains and the southernmost Cascade Range mountains, sometimes on serpentine soils.

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