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Lemmon's Rubberweed

Hymenoxys lemmonii (Greene) Cockerell

Description

provided by eFloras
Perennials, 30–50 cm (polycarpic; often with moderately branched, woody caudices). Stems 3–10(–15), green throughout or purple-red-tinted proximally, branched distally, glabrous or ± sparsely hairy. Leaves: blades simple or lobed (lobes 3–13), glabrous or sparsely hairy, gland-dotted; mid leaves lobed (lobes 3–7, terminal lobes 1.5–2.3 mm wide). Heads 10–85+ per plant, in paniculiform to corymbiform arrays. Peduncles (1–)2–4.5 cm, glabrous or ± hairy. Involucres subhemispheric to campanulate, 8–11 × 12–15 mm. Phyllaries in 2 series, unequal; outer 10–12, basally connate 1/4–1/2 their lengths (moderately to strongly keeled), ovate to lanceolate, 4.5–7 mm, apices acuminate to acute; inner 13–18(–28), obovate, 4–6 mm, apices usually mucronate. Ray florets 9–12; corollas yellow, 10–16 × 4–6.5 mm. Disc florets 50–125+; corollas 3.5–4.2 mm. Cypselae obpyramidal to narrowly obpyramidal, 2.5–3.5 mm; pappi of 5(–6) obovate, aristate scales (1.5–)2.1–2.8 mm. 2n = 30.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 435, 437, 443 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Synonym

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Picradenia lemmonii Greene, Pittonia 3: 272. 1898 (as lemmoni)
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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: 435, 437, 443 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

Hymenoxys lemmonii

provided by wikipedia EN

Hymenoxys lemmonii is a species of flowering plant in the daisy family known by the common names Lemmon's rubberweed, Lemmon's bitterweed, and alkali hymenoxys.[2] It is native to the western United States in and around the Great Basin in Utah, Nevada, northern California, and southeastern Oregon.[3]

Hymenoxys lemmonii is a biennial or perennial herb with one or more branching stems growing erect to a maximum height near 50 centimeters (20 inches). It produces straight, dark green leaves up to 9 centimeters (3.6 inches) long and divided into a number of narrow, pointed lobes. The foliage and stem may be hairless to quite woolly. The daisy-like flower head is generally at least 1.5 centimeters (0.6 inches) wide, with a center of 50–125 thick golden disc florets and a shaggy fringe of 9–12 golden ray florets.[4]

The species is named for John Gill Lemmon, husband of prominent American botanist Sarah Plummer Lemmon.[5]

References

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Hymenoxys lemmonii: Brief Summary

provided by wikipedia EN

Hymenoxys lemmonii is a species of flowering plant in the daisy family known by the common names Lemmon's rubberweed, Lemmon's bitterweed, and alkali hymenoxys. It is native to the western United States in and around the Great Basin in Utah, Nevada, northern California, and southeastern Oregon.

Hymenoxys lemmonii is a biennial or perennial herb with one or more branching stems growing erect to a maximum height near 50 centimeters (20 inches). It produces straight, dark green leaves up to 9 centimeters (3.6 inches) long and divided into a number of narrow, pointed lobes. The foliage and stem may be hairless to quite woolly. The daisy-like flower head is generally at least 1.5 centimeters (0.6 inches) wide, with a center of 50–125 thick golden disc florets and a shaggy fringe of 9–12 golden ray florets.

The species is named for John Gill Lemmon, husband of prominent American botanist Sarah Plummer Lemmon.

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cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
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wikipedia EN