Potentilla sect. Rivales Poeverlein in P. F. A. Ascherson et al. (Q3961)
Potentilla sect. Rivales is a taxon with the rank section within the genus Potentilla
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Potentilla sect. Rivales Poeverlein in P. F. A. Ascherson et al.
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Potentilla sect. Rivales is a taxon with the rank section within the genus Potentilla
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Statements
taxon/id/Potentilla sect. Rivales Poeverlein
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Potentilla sect. Rivales Poeverlein
Potentilla sect. Rivales
Poeverlein
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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taproots not fleshy-thickened;
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vestiture of long hairs, sometimes ± crisped hairs present, glands absent or sparse to abundant, not red (sometimes red-septate).
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Stems decumbent to erect, sometimes prostrate, not flagelliform, not rooting at nodes, from centers of ephemeral basal rosettes, (1–) 2–6 (–9) dm, lengths (1–) 2–5 (–12) times basal leaves.
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cauline (0–) 1–9 (–14);
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basal and proximal cauline ternate or palmate to pinnate (with distal leaflets ± confluent), (2–) 3–15 (–25) cm;
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petiole: long hairs ascending to spreading, rarely appressed, weak to stiff, glands absent or sparse to abundant;
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leaflets 3–9, at tip to distal 2/3 of leaf axis, separate to overlapping, oblanceolate or elliptic to obovate, sometimes oval or nearly round, margins flat, distal 1/2 to ± whole length evenly to unevenly incised 1/4–1/2 to midvein, teeth (2–) 3–8 (–15) per side, surfaces ± similar, green (abaxial often paler), not glaucous, long hairs weak to stiff, cottony hairs absent.
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Inflorescences (5–) 20–100+-flowered, ± cymose, sometimes racemiform, compact to open.
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Pedicels straight to ± recurved in fruit, 0.2–2 (–3) cm, proximal often ± longer than distal.
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Flowers 5-merous;
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hypanthium (2–) 3–6 (–7) mm diam.;
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petals pale-yellow to yellow, broadly oblanceolate to oblong or broadly obovate, (1–) 1.5–5 mm, usually shorter than sepals, apex rounded to ± retuse;
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stamens (5–) 10–20 (–25);
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styles subapical, conic-tapered, slightly to strongly papillate-swollen ± whole length, 0.5–0.8 mm.
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Achenes smooth to strongly rugose.
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(1-)2-5(-12) times basal leaves
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often more or less longer
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broadly oblanceolate
oblong or broadly obovate
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papillate-swollen
slightly to strongly; more or less
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