Difference between revisions of "Cota J. Gay ex Gussone (Q2126)"
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Latest revision as of 12:48, 24 June 2022
Cota is a taxon with the rank genus within the subtribe Anthemidinae
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Cota J. Gay ex Gussone
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Cota is a taxon with the rank genus within the subtribe Anthemidinae
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taxon/id/Cota J. Gay ex Gussone
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Cota J. Gay ex Gussone
Cota
J. Gay ex Gussone
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 1–5+, ascending to erect, not much branched, ± villous to sericeous (hairs usually medifixed, rarely basifixed) [glabrescent, glabrate].
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petiolate or sessile;
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blades obovate to oblanceolate or spatulate, (1–) 2 (–3) -pinnately [-subpalmately] lobed (primary lobes often pectinately divided), ultimate margins serrate or entire, faces ± villous to sericeous [glabrescent, glabrate].
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Heads radiate [discoid], borne singly or in lax, corymbiform arrays (peduncles sometimes distally dilated).
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Involucres hemispheric or broader [obconic], [5–] 10–12 [–20+] mm diam.
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Phyllaries persistent, 40–75+ in 3–5 series, distinct, deltate to lanceolate (often cartilaginous medially), unequal, margins and apices scarious (apices often mucronate to spinose, abaxial faces usually villous to arachnose).
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Receptacles ± hemispheric, paleate (throughout);
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paleae (persistent) ± flat, often cartilaginous (each proximally elliptic to oblong, distally ± subulate to spinose).
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Ray-florets [0] 12–21 [–35+], pistillate and fertile, or styliferous and sterile;
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corollas yellow [white or pinkish], laminae oblong (often reflexed, marcescent in fruit).
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Disc-florets 80–200+, bisexual, fertile;
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corollas yellow [pinkish], tubes ± compressed (bases not dilated, not clasping cypselae), throats funnelform, lobes 5, deltate (minutely crested abaxially near tips).
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Cypselae obconic to prismatic (± 4-angled), ± obcompressed or flattened, ribs 0 or 2 lateral (sometimes winged) plus 3–10 finer ribs or nerves on each face, faces glabrous (pericarps with myxogenic cells; embryo-sac development tetrasporic);
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obovate
oblanceolate or spatulate
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in lax , corymbiform arrays
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obconic
prismatic more or less obcompressed or flattened
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obconic
prismatic more or less obcompressed or flattened
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