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Comments ( englanti )

tarjonnut eFloras
Eriogonum davidsonii is widespread and mostly common to occasionally abundant or weedy in Arizona, California, southern Nevada, and southern Utah. It is exceedingly variable. In the northern part of California, its range approaches that of E. luteolum var. luteolum, and the two can be difficult to differentiate. To the south, in Tulare County, the distinction between E. davidsonii and E. luteolum var. pedunculatum also is difficult. Specimens of Eriogonum davidsonii with curved inflorescence branches resemble E. cithariforme in the mountains of southern California, and care must be taken to separate E. davidsonii from its more robust relative, E. molestum in the San Jacinto Mountains of Riverside County. The disjunct populations in Utah and Arizona are somewhat different in appearance but presently do not seem worthy of taxonomic separation. The epithet juncinellum is available should recognition be desired.

Seeds of Davidson's wild buckwheat were pounded into a meal and eaten dry by the Kawaiisu people of southern California (M. L. Zigmond 1981).

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Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description ( englanti )

tarjonnut eFloras
Herbs, erect, 1-5 dm, glabrous, greenish to grayish. Stems: aerial flowering stems erect, 0.5-1.5(-2) dm, glabrous. Leaves basal; petiole 1-5 cm, floccose; blade round to reniform, (0.3-)1-2(-4) × (0.3-)1-2(-4) cm, densely white-tomentose abaxially, floccose to glabrate and mostly greenish adaxially. Inflorescences cymose, occasionally distally uniparous due to suppression of secondary branches, open, 5-40 × 5-35 cm; branches straight or nearly so, infrequently inwardly curved distally, glabrous; bracts 1-3 × 1-2 mm. Peduncles absent. Involucres appressed to branches, cylindric-turbinate, 3-4 × 2-2.5 mm, glabrous; teeth 5, erect, 0.2-0.3 mm. Flowers 1.5-2 mm; perianth white to pink or red, rarely yellow, glabrous; tepals monomorphic, oblong-obovate; stamens included, 1-1.5 mm; filaments pilose proximally. Achenes brown, 3-gonous, 2 mm. 2n = 40.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
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Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Distribution ( englanti )

tarjonnut eFloras
Ariz., Calif., Nev., Utah; Mexico (Baja California).
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
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Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flowering/Fruiting ( englanti )

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Flowering May-Sep.
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Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Habitat ( englanti )

tarjonnut eFloras
Sandy to gravelly flats and slopes, mixed grassland, saltbush, chaparral, and sagebrush communities, oak and montane conifer woodlands; (400-)900-2600m.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
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Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Synonym ( englanti )

tarjonnut eFloras
Eriogonum molestum S. Watson var. davidsonii (Greene) Jepson; E. vimineum Douglas ex Bentham var. davidsonii (Greene) S. Stokes; E. vimineum var. glabrum S. Stokes; E. vimineum subsp. juncinellum (Gandoger) S. Stokes
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
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Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Eriogonum davidsonii ( englanti )

tarjonnut wikipedia EN

Eriogonum davidsonii is a species of wild buckwheat known by the common name Davidson's buckwheat. This plant is native to the southwestern United States and northern Baja California.[1] It grows in sandy or gravelly soils, mixed grassland, saltbush, chaparral, sagebrush communities as well as oak and montane conifer woodland.[2] It is a spindly annual herb growing up to 40 centimeters in height. Leaves are fuzzy, basal, and round with wavy or wrinkly margins fuzzy. They are two centimeters wide. The plant is variable in appearance, but is usually erect with thin, naked, neatly branching stems bearing clusters of tiny flowers at widely spaced nodes. Each flower is about 2 millimeters wide, bell-shaped, and can be white, pink or red. Flowering occurs May to September.[1][2]

References

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Eriogonum davidsonii: Brief Summary ( englanti )

tarjonnut wikipedia EN

Eriogonum davidsonii is a species of wild buckwheat known by the common name Davidson's buckwheat. This plant is native to the southwestern United States and northern Baja California. It grows in sandy or gravelly soils, mixed grassland, saltbush, chaparral, sagebrush communities as well as oak and montane conifer woodland. It is a spindly annual herb growing up to 40 centimeters in height. Leaves are fuzzy, basal, and round with wavy or wrinkly margins fuzzy. They are two centimeters wide. The plant is variable in appearance, but is usually erect with thin, naked, neatly branching stems bearing clusters of tiny flowers at widely spaced nodes. Each flower is about 2 millimeters wide, bell-shaped, and can be white, pink or red. Flowering occurs May to September.

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Eriogonum davidsonii ( vietnam )

tarjonnut wikipedia VI

Eriogonum davidsonii là một loài thực vật có hoa trong họ Rau răm. Loài này được Greene mô tả khoa học đầu tiên năm 1892.[1]

Chú thích

  1. ^ The Plant List (2010). Eriogonum davidsonii. Truy cập ngày 19 tháng 9 năm 2013.

Liên kết ngoài


Bài viết về phân họ cẩm chướng Eriogonoideae này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
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Eriogonum davidsonii: Brief Summary ( vietnam )

tarjonnut wikipedia VI

Eriogonum davidsonii là một loài thực vật có hoa trong họ Rau răm. Loài này được Greene mô tả khoa học đầu tiên năm 1892.

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