Potentilla sect. Niveae (Rydberg) A. Nelson in J. M. Coulter and A. Nelson (Q4008)

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Potentilla sect. Niveae is a taxon with the rank section within the genus Potentilla
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English
Potentilla sect. Niveae (Rydberg) A. Nelson in J. M. Coulter and A. Nelson
Potentilla sect. Niveae is a taxon with the rank section within the genus Potentilla

    Statements

    taxon/id/Potentilla sect. Niveae (Rydberg) A. Nelson
    0 references
    Potentilla sect. Niveae (Rydberg) A. Nelson
    Potentilla sect. Niveae
    (Rydberg) A. Nelson
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    Potentilla sect. Niveae
    North America
    Eurasia
    taproots not fleshy-thickened;
    vestiture of long, short, crisped, and/or cottony hairs, glands absent or sparse to common, sometimes red.
    Stems ascending to erect, not flagelliform, not rooting at nodes, lateral to persistent basal rosettes, 0.2–2.5 (–4.5) dm, lengths 1.5–5 times basal leaves.
    Leaves: basal rarely 2-ranked;
    cauline 0–2 (–3);
    primary leaves usually ternate, rarely palmate on same plant, (0.5–) 1–12 (–20) cm;
    petiole: long hairs sometimes absent, ± appressed to spreading, soft to stiff, glands absent or sparse to common;
    leaflets 3 (–5), at tip of leaf axis, separate to overlapping, usually obovate, sometimes elliptic, suborbiculate, or obtriangular, margins slightly to strongly revolute, rarely flat, distal (1/3–) 1/2 to nearly whole length evenly incised 1/4–3/4 to midvein, teeth (1–) 2–6 (–12) per side, surfaces ± to strongly dissimilar, abaxial gray to white, sometimes yellowish white or reddish, cottony-crisped hairs usually dense, glands absent or obscured, adaxial dark green to grayish white or yellowish white, sometimes reddish, not glaucous, long hairs soft to stiff.
    Inflorescences 1–7 (–15) -flowered, cymose, ± to very open, or solitary flowers.
    Pedicels straight in fruit, 0.4–6 (–10) cm, proximal often longer than distal.
    Flowers 5-merous;
    hypanthium (1.8–) 2.5–7 mm diam.;
    petals pale-yellow to yellow, ± obcordate, (3–) 4–10 (–15) mm, longer than sepals, apex retuse;
    styles subapical, narrowly columnar, tapered, or conic, usually papillate-swollen in proximal 1/5 or less, sometimes to proximal 1/3 (–1/2) or not at all, 0.7–1.2 (–1.5) mm.
    Achenes smooth or slightly rugose.