Description
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Annuals, 5–30 cm. Stems decumbent to ascending. Leaves: blades oblong to oblanceolate, 5–40 mm, margins entire or toothed, plane (apices rounded to acute), faces lanate or tometose to tomentulose. Heads borne singly. Peduncles 1–8 cm. Involucres hemispheric to obconic, 5–6 mm diam. Phyllaries 6–10, ± connate. Ray florets 6–10; laminae yellow, 2–10 mm. Disc florets 10–30; corollas 1.3–3 mm (tubes cylindric, throats broadly funnelform, abruptly dilated, lobes glabrous or hairy, hairs 1-celled, not glandular; anther appendages deltate, widest at bases, not glandular). Cypselae 2.2–3 mm; pappi 0 or of 6–10 ± ovate to cuneate, entire, erose, or laciniate scales 0.1–0.5 mm.
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Synonym
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Lasthenia ambigua A. Gray, Proc. Amer. Acad. Arts 6: 547. 1865
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Comprehensive Description
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Eriophyllum parviflorum (A. Gray) Rydberg
Bahia Wallacei A. Gray, Proc. Bost. Soc. Nat. Hist. 7: 146. 1859. Not B. Wallacei A. Gray. 1857. Bahia parviflora A. Gray. Bot. Calif. 1: 382. 1876.
A floccose annual; stem branched at the base, 0.5-1.5 dm. high; leaves 1-2 cm. long,
the lower spatulate, the upper linear-oblanceolate, usually with a few teeth; peduncles 1-3 cm.
long; involucre campanulate, about 6 mm. high, 4-5 mm. broad; bracts usually united at
least at first; ray-flowers 6-8; ligules yellow, 2-3 mm. long and nearly as broad; disk-corollas
2 mm. long, the short tube densely glandular-hispid; achenes 2.5 mm. long, nearly prismatic,
somewhat thickened upwards, hirsutulous; squamellae about 8, minute.
Type locality: Fort Tejon, California. Distribution: Southern California.
- библиографски навод
- Per Axel Rydberg. 1915. (CARDUALES); CARDUACEAE; HELENIEAE, TAGETEAE. North American flora. vol 34(2). New York Botanical Garden, New York, NY
Comprehensive Description
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англиски
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добавил North American Flora
Eriophyllum ambiguum A. Grav, Proc. Am. Acad. 19: 26
1883.
Lasthenia ambigua A. Gray, Proc. Am. Acad. 6: 547. 1865. Bahia ambigua A. Gray, Bot. Calif. 1: 382. 1876.
A floccose annual; stem sparingly branched, 1-2 dm. high; leaves oblanceolate, entire,
1-2 cm. long; peduncles 1-3 cm. long; involucre campanulate, 6-7 mm. high, 4-5 mm. broad;
bracts usually united; free lobes lanceolate, acuminate; ray-flowers 6-8; ligules yellow, 2-3
mm. long, nearly as broad; disk-corollas 2.5 mm. long; tube short, densely glandular-hispid;
achenes 2.5 mm. long, glabrous; pappus wanting.
Type locality: Near Fort Tejon, California. Distribution: Southern California.
- библиографски навод
- Per Axel Rydberg. 1915. (CARDUALES); CARDUACEAE; HELENIEAE, TAGETEAE. North American flora. vol 34(2). New York Botanical Garden, New York, NY
Eriophyllum ambiguum
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Eriophyllum ambiguum is a species of flowering plant in the family Asteraceae known by the common name beautiful woolly sunflower. It is native to the deserts and adjacent hills of southern and eastern California, northwestern Arizona, and southern Nevada.[2][3]
Eriophyllum ambiguum grows in chaparral, woodlands, and desert habitat. It is an annual herb growing decumbent or upright with stems up to 30 centimeters (1 foot) long. The leaves are widely lance-shaped or oblong and sometimes have lobes, with woolly hairs on both sides. The inflorescence produces one flower head containing many yellow disc florets and 6 to 10 yellow, white, or bicolored ray florets which are each 2 millimeters to one centimeter (0.08-0.40 inches) long. The fruit is a rough-haired achene which may have a very small pappus.[4]
- Varieties[4][1][3]
References
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Eriophyllum ambiguum: Brief Summary
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Eriophyllum ambiguum is a species of flowering plant in the family Asteraceae known by the common name beautiful woolly sunflower. It is native to the deserts and adjacent hills of southern and eastern California, northwestern Arizona, and southern Nevada.
Eriophyllum ambiguum grows in chaparral, woodlands, and desert habitat. It is an annual herb growing decumbent or upright with stems up to 30 centimeters (1 foot) long. The leaves are widely lance-shaped or oblong and sometimes have lobes, with woolly hairs on both sides. The inflorescence produces one flower head containing many yellow disc florets and 6 to 10 yellow, white, or bicolored ray florets which are each 2 millimeters to one centimeter (0.08-0.40 inches) long. The fruit is a rough-haired achene which may have a very small pappus.
Varieties Eriophyllum ambiguum var. ambiguum -
California, mostly in
Kern County Eriophyllum ambiguum var. paleaceum (Brandegee) Ferris -
California,
Nevada,
Arizona
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Eriophyllum ambiguum
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добавил wikipedia VI
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Eriophyllum ambiguum: Brief Summary
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виетнамски
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добавил wikipedia VI
Eriophyllum ambiguum là một loài thực vật có hoa trong họ Cúc. Loài này được (A.Gray) A.Gray mô tả khoa học đầu tiên năm 1883.
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