Poterium Linnaeus (Q4184)
Poterium is a taxon with the rank genus within the tribe Sanguisorbeae
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Poterium Linnaeus
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Poterium is a taxon with the rank genus within the tribe Sanguisorbeae
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Statements
taxon/id/Poterium Linnaeus
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Poterium Linnaeus
Poterium
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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rhizomatous [taprooted].
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Stems 1–10+, ascending to erect, glabrescent to loosely villous [glabrous].
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Leaves deciduous [persistent], basal and/or cauline;
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stipules persistent, adnate to petiole or free, lanceolate to ovate, margins entire or serrate;
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blade oblanceolate to obovate [or elliptic], 1–15 [–35] cm, herbaceous [subcoriaceous], leaflets 2–12 pairs, elliptic, orbiculate, or obovate, margins flat, crenate, serrate, or incised, surfaces glabrous or hairy hairs unicellular to multicellular, acicular and/or gland-tipped.
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Inflorescences terminal [or axillary] to distal leaves, [15–] 20–100+-flowered, headlike spikes, glabrous or sparsely [to densely] pubescent;
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peduncles present, sometimes absent;
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bracteoles present.
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Flowers bisexual or pistillate (plants gynomonoecious [dioecious]), 2–4 [–5] mm diam.;
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hypanthium dry [fleshy, spongy], top-shaped, ellipsoid, or nearly orbicular, 2–9 mm, angled, winged, and/or ornamented with irregular flanges and papillae, tan to brown, hairy or glabrous;
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sepals 4, distinct [basally connate], usually ascending or spreading, rarely slightly reflexed, ovate to elliptic;
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stamens 0–30 (–50), shorter or longer than sepals;
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carpels [1 or] 2 (or 3), glabrous, styles repeatedly branched, brushlike.
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Fruits achenes, 1 or 2 [or 3], ellipsoid, 1.5–2 mm diam., glabrous (though reticulate and muricate);
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hypanthium persistent, enclosing achenes;
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