Difference between revisions of "Cirsium scariosum Nuttall (Q3029)"
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Latest revision as of 12:44, 24 June 2022
Cirsium scariosum is a taxon with the rank species within the genus Cirsium
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Cirsium scariosum Nuttall
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Cirsium scariosum is a taxon with the rank species within the genus Cirsium
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Statements
taxon/id/Cirsium scariosum Nuttall
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Cirsium scariosum Nuttall
Cirsium scariosum
Nuttall
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
accepted
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CA-AB
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CA-BC
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CA-QC
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US-AZ
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US-CA
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US-CO
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US-ID
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US-MT
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US-NM
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US-NV
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US-OR
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US-UT
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US-WA
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US-WY
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Stems absent, or with crowded branches from near base, or simple and erect, often fleshy and thickened, glabrous to thinly gray tomentose, often villous with septate trichomes.
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Leaves: blades linear to elliptic, 5–20 × 3–7 cm, plane to strongly undulate, unlobed or shallowly to deeply pinnatifid, lobes linear-lanceolate to broadly triangular, closely spaced, spreading, spinose-dentate or lobed, main spines slender to stout, 2–15+ mm, abaxial faces glabrous or thinly to densely tomentose, ± villous with septate trichomes along the veins, glabrate or trichomes persistent, adaxial thinly arachnoid tomentose and soon glabrescent;
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basal often present at flowering, sessile or winged-petiolate;
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cauline many in caulescent forms, reduced distally or not, winged-petiolate or distal sessile;
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distal often well developed, similar to proximal, sometimes much narrower and bractlike.
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Heads 1–many, erect, borne singly or often densely crowded in spiciform, racemiform, or subcapitate arrays, especially in acaulescent or short-caulescent plants, often closely subtended by distalmost leaves.
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Peduncles 0–10 cm, leafy-bracted.
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Involucres ovoid to hemispheric, 2–4 × 1.5–6 cm, loosely arachnoid on phyllary margins or glabrate.
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Phyllaries in 5–10 series, imbricate, ovate or lanceolate (outer) to linear or linear-lanceolate (inner), margins (outer) entire or scarious-fringed, abaxial faces without glutinous ridge;
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outer and mid appressed, spines erect to spreading 0.5–13 mm;
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apices of mid and inner narrowed and scabro-denticulate or with expanded, erose-dentate tips, spineless or tipped with flattened spines.
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Corollas white or pale lavender to purple, 20–40 mm, tubes 7–24 mm, throats 4–12 mm (noticeably larger than tubes), lobes 4–10 mm;
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style tips 3.5–8 mm.
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Cypselae light to dark-brown, 4–6.5 mm, apical collars usually colored like body;
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glabrous
thinly gray tomentose
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strongly undulate unlobed or
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strongly undulate unlobed or
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linear-lanceolate
broadly triangular
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glabrous or
thinly densely tomentose
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reduced
distally; distally; not
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lanceolate
linear or linear-lanceolate
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