Xanthisma spinulosum (Pursh) D. R. Morgan & R. L. Hartman (Q2534)
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Xanthisma spinulosum is a taxon with the rank species within the genus Xanthisma
| Language | Label | Description | Also known as |
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| English |
Xanthisma spinulosum (Pursh) D. R. Morgan & R. L. Hartman
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Xanthisma spinulosum is a taxon with the rank species within the genus Xanthisma
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Statements
taxon/id/Xanthisma spinulosum (Pursh) D.R. Morgan & R.L. Hartman
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Xanthisma spinulosum (Pursh) D.R. Morgan & R.L. Hartman
Xanthisma spinulosum
(Pursh) D.R. Morgan & R.L. Hartman
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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CA-AB
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CA-MB
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CA-SK
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US-AZ
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US-CA
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US-CO
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US-ID
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US-IA
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US-KS
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US-MN
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US-MT
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US-ND
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US-NM
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US-NE
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US-NV
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US-OK
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US-TX
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US-UT
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US-WY
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Perennials or subshrubs, 10–100 cm;
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caudices branched, usually woody, taproots 2–18+ cm.
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Stems 1–30+, branched throughout or in distal 1/2–2/3, moderately stout to stout, not wiry, hairy or glabrous, often stipitate-glandular.
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Leaves: basal sometimes withering by flowering, blades 1.5–3 × 0.8–1.3 cm, pinnatifid to 2+-pinnatifid;
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cauline variously spaced, blades oblong to lanceolate, 0.2–8 × 0.1–3 cm, not reduced markedly distally, margins deeply lobed to coarsely dentate or ± entire, teeth 4–18+ per side, each tipped with white bristles 0.2–1.8 mm, hairy or glabrous, often stipitate-glandular.
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Peduncles glabrous or hairy, often stipitate-glandular;
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bracts 0–3 leaflike.
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Involucres hemispheric to cupulate, 6–10 × 8–25 mm.
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Phyllaries in 5–6 series, linear to linear-lanceolate, 0.1–0.9 mm, apices acute to acuminate, tipped with white bristle, faces glabrous or hairy, often stipitate-glandular.
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Ray-florets 14–60;
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corollas yellow, tubes 2.5–3.2 mm, laminae 5–12 × 1–2.5 mm.
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Disc-florets 30–150+;
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Cypselae narrowly obovoid, 1.8–2.5 mm, nerves 16–24, sparsely to moderately tawny hairy;
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pappi tawny, 4–6 mm, bristles progressively longer adaxially.
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reduced
not; markedly distally; distally
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longer
progressively; adaxially
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