Hemizonella (A. Gray) A. Gray (Q2855)
Hemizonella is a taxon with the rank genus within the tribe Madieae
| Language | Label | Description | Also known as |
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| English |
Hemizonella (A. Gray) A. Gray
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Hemizonella is a taxon with the rank genus within the tribe Madieae
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Statements
taxon/id/Hemizonella (A. Gray) A. Gray
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Hemizonella (A. Gray) A. Gray
Hemizonella
(A. Gray) A. Gray
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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Stems ± erect (branches often divaricate, hispidulous, stipitate-glandular).
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Leaves basal and/or cauline;
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proximal opposite, distal alternate (often in clusters of 2–3+ immediately proximal to branches);
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blades linear, margins entire or toothed, faces hirsute and (distal leaves) glandular-puberulent.
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Heads radiate, borne singly or in corymbiform arrays or glomerules (peduncles filiform).
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Peduncular bracts: pit-glands, tack-glands, or spines 0.
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Involucres ± obovoid, (1–) 2–4 mm diam.
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Phyllaries 3–5 in 1 series (each mostly or wholly enveloping a ray ovary, ± oblanceolate, herbaceous, abaxially hirsute and glandular-hirtellous).
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Receptacles flat to convex, glabrous or sparsely setulose, paleate (paleae falling, in 1 series between rays and discs, connate).
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Ray-florets 3–5, pistillate, fertile;
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corollas pale-yellow.
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Disc-florets 1–2, bisexual, fertile;
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corollas pale-yellow, (pubescent) tubes about equaling funnelform throats, lobes 5, deltate (anthers yellow; styles glabrous proximal to branches).
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Ray cypselae (black) obcompressed (arcuate, basal attachments centered, apices minutely beaked, beaks straight, oriented adaxially, 0.1–0.15 mm, faces sparsely hispidulous or glabrate);
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Disc cypselae (black) ± terete, clavate (± hispidulous, apices minutely beaked, beaks straight, oriented vertically, 0.1–0.15 mm);
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in corymbiform arrays or glomerules
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