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Grassland Tarweed

Deinandra increscens (H. M. Hall ex D. D. Keck) B. G. Baldwin

Comments

provided by eFloras
Extensive morphologic and ecologic variation within Deinandra increscens has been interpreted variously. Subspecies recognized here follow the treatment of B. D. Tanowitz (1982) except for return of Hoover’s subsp. foliosa to D. paniculata A. Gray and recognition of D. bacigalupii B. G. Baldwin for members of subsp. increscens in the sense of Tanowitz from the eastern San Francisco Bay Area.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 278, 281, 284 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description

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Annuals, 6–100 cm. Stems ± solid. Leaves: proximal blades pinnati-fid, faces ± hirsute or villous and sometimes stipitate-glandular. Heads usually in paniculiform arrays sometimes congested. Bracts subtending heads usually overlapping proximal 0–1/2 of each involucre. Phyllaries evenly stipitate-glandular, including margins and apices, usually with non-glandular, non-pustule-based hairs as well. Paleae in 1 series. Ray florets 8–13(–15); laminae pale to deep yellow, 4–8 mm. Disc florets 11–32, all or mostly functionally staminate; anthers reddish to dark purple. Pappi of 5–14 linear, lance-linear, or oblong, fimbriate to erose scales 1–2 mm.
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. 21: 278, 281, 284 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
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partner site
eFloras

Synonym

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Hemizonia paniculata A. Gray subsp. increscens H. M. Hall ex D. D. Keck, Madroño 3: 11. 1935; H. increscens (H. M. Hall ex D. D. Keck) Tanowitz
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. 21: 278, 281, 284 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

Deinandra increscens

provided by wikipedia EN

Deinandra increscens is a species of flowering plant in the family Asteraceae known by the common name grassland tarweed. It is endemic to California, where it has been found primarily in Monterey, San Luis Obispo and Santa Barbara Counties (including Santa Cruz and Santa Rosa Islands). A few isolated populations have been reported from Kern and Merced Counties, but these are from urban areas (Cities of Merced and Bakersfield) and probably represent cultivated specimens.[2]

Deinandra increscens is an annual up to 100 cm (40 inches) tall. It has numerous flower heads, often tightly clumped together, each with yellow ray florets and disc florets with yellow corollas but red or purple anthers.[3]

Subspecies[1]

References

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Deinandra increscens: Brief Summary

provided by wikipedia EN

Deinandra increscens is a species of flowering plant in the family Asteraceae known by the common name grassland tarweed. It is endemic to California, where it has been found primarily in Monterey, San Luis Obispo and Santa Barbara Counties (including Santa Cruz and Santa Rosa Islands). A few isolated populations have been reported from Kern and Merced Counties, but these are from urban areas (Cities of Merced and Bakersfield) and probably represent cultivated specimens.

Deinandra increscens is an annual up to 100 cm (40 inches) tall. It has numerous flower heads, often tightly clumped together, each with yellow ray florets and disc florets with yellow corollas but red or purple anthers.

Subspecies Deinandra increscens subsp. increscens grows along the California Central Coast and the coastal mountain ranges. Deinandra increscens subsp. villosa (Gaviota tarweed) is a rare and endangered subspecies endemic to Santa Barbara County, where it is known only from an area on the Gaviota Coast.
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