Tetradymia de Candolle in A. P. de Candolle and A. L. P. P. de Candolle (Q2960)
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Tetradymia is a taxon with the rank genus within the tribe Senecioneae
| Language | Label | Description | Also known as |
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| English |
Tetradymia de Candolle in A. P. de Candolle and A. L. P. P. de Candolle
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Tetradymia is a taxon with the rank genus within the tribe Senecioneae
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Statements
taxon/id/Tetradymia de Candolle
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Tetradymia de Candolle
Tetradymia
de Candolle
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
accepted
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Shrubs, mostly 30–200 cm.
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Stems 1–5+, erect to spreading (tomentose to pannose or glabrous, often spiny).
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sessile (or obscurely petiolate);
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blades obscurely palmately nerved (usually 1-nerved), linear to filiform, narrowly lanceolate, or oblanceolate, margins entire, faces glabrous or lanate to tomentose, sometimes glabrescent.
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Heads discoid, (1–3) in distil axils or (3–8) in corymbiform clusters.
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Involucres turbinate to cylindric or hemispheric, 3–10+ mm diam.
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Phyllaries persistent, 4–6 in 1–2 series, erect, distinct, mostly oblong to ovate or lanceolate, equal or subequal, margins obscurely scarious.
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Receptacles flat, foveolate, epaleate.
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Disc-florets 4–9, bisexual, fertile;
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corollas cream to bright-yellow, tubes longer than funnelform or abruptly dilated throats, lobes 5, recurved, linear to lanceolate;
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style-branches stigmatic in 2 lines, apices usually truncate to rounded-truncate, sometimes truncate-penicillate (appendages essentially 0).
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Cypselae prismatic to obconic or fusiform, obscurely 5-ribbed, glabrous or hirsute to densely pilose (hairs often obscuring pappi);
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pappi 0 or of 70–150 bristles or of 20–30, white to stramineous, subulate to setiform scales.
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filiform narrowly lanceolate or oblanceolate
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filiform narrowly lanceolate or oblanceolate
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filiform narrowly lanceolate or oblanceolate
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turbinate
cylindric or hemispheric
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prismatic
obconic or fusiform
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150 bristles or , , scales
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