Difference between revisions of "Sibbaldia Linnaeus (Q4052)"
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Latest revision as of 13:33, 24 June 2022
Sibbaldia is a taxon with the rank genus within the tribe Potentilleae
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Sibbaldia Linnaeus
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Sibbaldia is a taxon with the rank genus within the tribe Potentilleae
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taxon/id/Sibbaldia Linnaeus
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Sibbaldia Linnaeus
Sibbaldia
Linnaeus
FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
accepted
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Herbs, perennial, [0.1–] 0.2–1.5 (–2) [–3] dm, [subglabrous or] sparsely strigose to subappressed pilose [to densely tomentose or sericeous];
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horizontal rootstocks branched, compact, woody.
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Stems 1–10+, prostrate to ascending [or erect], green to reddish.
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Leaves deciduous or marcescent, mostly basal, alternate, ternate [or simple];
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stipules persistent, basally adnate to petiole, sheathing, lanceolate to ovate, margins entire;
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blade bluntly ovate to obovate [or cordate] in outline, 1–3 [–4] cm, foliaceous, leaflets 3, cuneate or oblanceolate to broadly elliptic or obovate to nearly orbiculate, margins flat, shallowly (2–) 3 (–5) [–7] -toothed apically, central tooth usually shorter than others, venation pinnate, surfaces often more densely strigose on veins and margins, sometimes glabrous.
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Inflorescences terminal, (1–) 3–12-flowered, loosely capitate or corymbose (or flowers solitary);
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bracts present, reduced;
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bracteoles absent.
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Pedicels present, straight or curved.
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Flowers 4–7 [–10] mm diam.;
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epicalyx bractlets 5;
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hypanthium shallowly cupulate, 0.5–2 × 2–4 [–5] mm, usually strigose, sometimes glabrous;
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sepals 5, spreading, broadly lanceolate to ovate;
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petals 5, ± yellow, oblanceolate [to obovate], shorter [to slightly longer] than sepals;
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stamens 5 [rarely 10], shorter than petals, filaments columnar, glabrous, anthers with theca solitary, ± horseshoe-shaped, rimming an indistinct connective, dehiscing by continuous marginal slit;
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torus hemispheric;
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carpels 5–15 [–30], glabrous, styles lateral, narrowly clavate;
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Fruits aggregated achenes, individually deciduous, 5–15 [–30], obliquely ovoid, 1.2–1.7 mm, glabrous;
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hypanthium persistent;
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sepals persistent, erect;
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sparsely strigose
subappressed pilose
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(2-)3(-5)[-7]-toothed
shallowly; apically
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oblanceolate
broadly elliptic or obovate
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