Edit History
Onopordum [family COMPOSITAE]
Date Updated: 23 July 2012
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 19,
Names
Onopordum [family COMPOSITAE], Sp. Pl., 2: 827. 1753 Gen. Pl. ed., 5, 359. 1754
Treatment Author(s)
David J. Keil
Information
Biennials, 50–400+ cm, coarse, prickly. Stems usually erect, ± branched, spiny-winged. Leaves basal and cauline; winged-petiolate (basal) or sessile (cauline); blade bases narrowing, margins pinnately lobed or divided and dentate, teeth and lobes tipped with stout spines. Heads discoid, borne singly or in corymbiform arrays; (peduncles 0 or spiny winged). Involucres hemispheric to ovoid or spheric. Phyllaries many in 8–10+ series, linear to ovate, entire, tapered to stiff spines, middle and outer often spreading or reflexed. Receptacles flat to convex, epaleate, not bristly, alveolate with apically fringed pits. Florets many; corollas white or purple, actinomorphic or weakly zygmorphic, tubes slender, throats cylindric or narrowly goblet-shaped, lobes linear; anther bases acute-tailed, apical appendages subulate; style branches: fused portions with minutely hairy nodes, long, cylindric, minutely papillate, distinct portions minute. Cypselae ± cylindric, 4–5-angled, usually ± transversely roughened, glabrous, attachment scars basal; pappi falling in ring, of many barbed or plumose bristles, basally connate. x = 17.
Distribution
Eurasia.
Native/Introduced
introduced;
Date Updated: 23 July 2012
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 19,
Names
Onopordum [family COMPOSITAE], Sp. Pl., 2: 827. 1753 Gen. Pl. ed., 5, 359. 1754
Treatment Author(s)
David J. Keil
Information
Biennials, 50–400+ cm, coarse, prickly. Stems usually erect, ± branched, spiny-winged. Leaves basal and cauline; winged-petiolate (basal) or sessile (cauline); blade bases narrowing, margins pinnately lobed or divided and dentate, teeth and lobes tipped with stout spines. Heads discoid, borne singly or in corymbiform arrays; (peduncles 0 or spiny winged). Involucres hemispheric to ovoid or spheric. Phyllaries many in 8–10+ series, linear to ovate, entire, tapered to stiff spines, middle and outer often spreading or reflexed. Receptacles flat to convex, epaleate, not bristly, alveolate with apically fringed pits. Florets many; corollas white or purple, actinomorphic or weakly zygmorphic, tubes slender, throats cylindric or narrowly goblet-shaped, lobes linear; anther bases acute-tailed, apical appendages subulate; style branches: fused portions with minutely hairy nodes, long, cylindric, minutely papillate, distinct portions minute. Cypselae ± cylindric, 4–5-angled, usually ± transversely roughened, glabrous, attachment scars basal; pappi falling in ring, of many barbed or plumose bristles, basally connate. x = 17.
Distribution
Eurasia.
Native/Introduced
introduced;
Date Updated: 23 July 2012
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 19,
Names
Onopordum [family COMPOSITAE], Sp. Pl., 2: 827. 1753 Gen. Pl. ed., 5, 359. 1754
Treatment Author(s)
David J. Keil
Information
Biennials, 50–400+ cm, coarse, prickly. Stems usually erect, ± branched, spiny-winged. Leaves basal and cauline; winged-petiolate (basal) or sessile (cauline); blade bases narrowing, margins pinnately lobed or divided and dentate, teeth and lobes tipped with stout spines. Heads discoid, borne singly or in corymbiform arrays; (peduncles 0 or spiny winged). Involucres hemispheric to ovoid or spheric. Phyllaries many in 8–10+ series, linear to ovate, entire, tapered to stiff spines, middle and outer often spreading or reflexed. Receptacles flat to convex, epaleate, not bristly, alveolate with apically fringed pits. Florets many; corollas white or purple, actinomorphic or weakly zygmorphic, tubes slender, throats cylindric or narrowly goblet-shaped, lobes linear; anther bases acute-tailed, apical appendages subulate; style branches: fused portions with minutely hairy nodes, long, cylindric, minutely papillate, distinct portions minute. Cypselae ± cylindric, 4–5-angled, usually ± transversely roughened, glabrous, attachment scars basal; pappi falling in ring, of many barbed or plumose bristles, basally connate. x = 17.
Distribution
Eurasia.
Native/Introduced
introduced;
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