Difference between revisions of "Cirsium Miller (Q3009)"
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Latest revision as of 12:47, 24 June 2022
Cirsium is a taxon with the rank genus within the tribe Cardueae
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Cirsium Miller
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Cirsium is a taxon with the rank genus within the tribe Cardueae
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Statements
taxon/id/Cirsium Miller
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Cirsium Miller
Cirsium
Miller
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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Stems (1–several) erect, branched or simple, sometimes narrowly spiny-winged.
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finely bristly-dentate to coarsely dentate or 1–3 times pinnately lobed, teeth and lobes bristly-tipped, faces green and glabrous or densely gray-canescent, usually eglandular.
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Heads discoid, borne singly, terminal and in distal axils, or in racemiform, spiciform, subcapitate, paniculiform, or corymbiform arrays.
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(Peduncles with ± reduced leaflike bracts.) Involucres cylindric to ovoid or spheric, (1–6 ×) 1–8 cm.
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Phyllaries many in 5–20 series, subequal or weakly to strongly, outer and middle with bases appressed and apices spreading to erect, usually spine-tipped, innermost usually with erect, flat, often twisted, entire or dentate, usually spineless apices (distal portion of phyllary midveins in many species with elongate, glutinous resin-gland, usually milky in fresh material but dark-brown to black when dry).
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Receptacles flat to convex, epaleate, covered with tawny to white bristles or setiform scales.
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corollas white to pink, red, yellow or purple, ± bilateral, tubes long, slender, distally bent, throats short, abruptly expanded, cylindric, lobes linear;
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(filaments distinct) anther bases sharply short-tailed, apical appendages linear-oblong;
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style tips elongate (as measured in descriptions including the slightly swollen nodes, long cylindric fused portions of style-branches and very short distinct portions).
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Cypselae ovoid, ± compressed, with apical rims, smooth, not ribbed, glabrous, basal attachment scars slightly angled;
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pappi persistent or falling in rings, in 3–5 series of many flattened, plumose bristles or plumose, setiform scales (longer bristles shorter than corollas except in C. foliosum and C. arvense).
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spiny-winged
sometimes narrowly
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