Difference between revisions of "Ageratina Spach (Q2587)"
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Latest revision as of 12:52, 24 June 2022
Ageratina is a taxon with the rank genus within the tribe Eupatorieae
| Language | Label | Description | Also known as |
|---|---|---|---|
| English |
Ageratina Spach
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Ageratina is a taxon with the rank genus within the tribe Eupatorieae
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Statements
taxon/id/Ageratina Spach
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Ageratina Spach
Ageratina
Spach
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
accepted
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Perennials, subshrubs, or shrubs [trees], mostly 20–220 cm.
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Stems usually erect, rarely scandent, sparsely to densely branched.
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blades 3 (–5) -nerved from bases, usually deltate, lanceolate, ovate, rhombic, or triangular, sometimes orbiculate, margins entire, crenate, dentate, or serrate, faces glabrous or hispidulous, pilose, or puberulent, sometimes glanddotted (A. occidentalis, A. adenophora).
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Heads discoid, usually in compact, (terminal and axillary) corymbiform arrays, sometimes borne singly.
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Involucres campanulate, 3–6 mm diam.
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Phyllaries persistent, 8–30 in 2 (–3) series, 0-nerved or 2-nerved, lanceolate to linear, ± equal (herbaceous).
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corollas white or lavender, throats obconic to campanulate (lengths 1.5–2 times diams.);
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styles: bases sometimes enlarged, glabrous, branches linear, seldom distally dilated.
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Receptacles convex (glabrous or hairy), epaleate.
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Cypselae prismatic or ± fusiform, usually 5-ribbed, scabrellous and/or glanddotted;
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pappi usually persistent, sometimes fragile, rarely falling, of 5–40, barbellulate bristles in 1 series.
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