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California Helianthella

Helianthella californica A. Gray

Description

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Plants 15–60 cm. Cauline leaves: (nearly all opposite or mostly alternate) largest proximal to mid stems; blades ± 3-nerved, lance-ovate or oblong-lanceolate to lanceolate or linear, 5–26 cm, faces ± hirsutulous to scaberulous or glabrescent. Heads usually borne singly, sometimes 2–3+, erect. Involucres hemispheric, 15–25 mm diam. Phyllaries lanceolate (sometimes outer 2–3 foliaceous; margins usually ciliate, abaxial faces densely hairy or glabrate). Paleae chartaceous, relatively firm. Ray florets (10–)12–16; laminae 15–20+ mm. Disc corollas yellow. Cypselae strongly compressed, obovate-cuneate to oblong (winged or almost wingless, margins ciliate, apices deeply notched, faces glabrous); pappi 0 or 2 ± subulate scales plus 0–4 shorter scales.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 115, 116 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Helianthella californica

provided by wikipedia EN

Helianthella californica is a species of flowering plant in the family Asteraceae known by the common name California helianthella. This wildflower is native to the mountains of California, northwestern Nevada, and southwestern Oregon.[2][3]

Helianthella californica is a taprooted perennial herb producing erect stems up to about 60 centimeters (2 feet) tall. The many lance-shaped leaves are up to 4 centimeters (1.6 inches) wide and up to 26 cm (11 inches) long, smooth or slightly toothed along the edges. The inflorescence holds one or more sunflower-like flower heads. Each head has a center of golden disc florets with purple or reddish parts, and a fringe of yellow ray florets one or two centimeters (0.4-0.8 inches) long.[4]

Subspecies[1][3]
  • Helianthella californica subsp. californica - Coast Ranges in area near San Francisco Bay plus a few populations in northern Sierra Nevada Foothills
  • Helianthella californica subsp. nevadensis (Greene) W.A.Weber - Sierra Nevada + Cascades in California, Nevada, + Oregon
  • Helianthella californica subsp. shastensis (W.A.Weber) W.A.Weber - southern Cascades plus Shasta-Trinity area
Leaves

References

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Helianthella californica: Brief Summary

provided by wikipedia EN

Helianthella californica is a species of flowering plant in the family Asteraceae known by the common name California helianthella. This wildflower is native to the mountains of California, northwestern Nevada, and southwestern Oregon.

Helianthella californica is a taprooted perennial herb producing erect stems up to about 60 centimeters (2 feet) tall. The many lance-shaped leaves are up to 4 centimeters (1.6 inches) wide and up to 26 cm (11 inches) long, smooth or slightly toothed along the edges. The inflorescence holds one or more sunflower-like flower heads. Each head has a center of golden disc florets with purple or reddish parts, and a fringe of yellow ray florets one or two centimeters (0.4-0.8 inches) long.

Subspecies Helianthella californica subsp. californica - Coast Ranges in area near San Francisco Bay plus a few populations in northern Sierra Nevada Foothills Helianthella californica subsp. nevadensis (Greene) W.A.Weber - Sierra Nevada + Cascades in California, Nevada, + Oregon Helianthella californica subsp. shastensis (W.A.Weber) W.A.Weber - southern Cascades plus Shasta-Trinity area Leaves
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Wikipedia authors and editors
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