Potentilla sect. Multijugae (Rydberg) A. Nelson in J. M. Coulter and A. Nelson (Q4025)

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

    Statements

    taxon/id/Potentilla sect. Multijugae (Rydberg) A. Nelson
    0 references
    Potentilla sect. Multijugae (Rydberg) A. Nelson
    Potentilla sect. Multijugae
    (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. Multijugae
    w North America
    c Mexico
    taproots often fleshy-thickened;
    vestiture primarily of straight hairs, not differentiated into long and short, crisped hairs often on stems and inflorescence, cottony hairs only in P. breweri, glands usually absent or sparse, rarely common, rarely ± red.
    Stems usually prostrate to decumbent, sometimes ascending (especially in supporting vegetation), not flagelliform, not rooting at nodes, lateral to persistent basal rosettes, (0.3–) 0.5–5 (–7) dm, lengths 1–3 (–5) times basal leaves.
    Leaves: basal rarely ± 2-ranked;
    cauline (0–) 1–3 (–4);
    primary leaves pinnate (with distal leaflets distinct or confluent), (1.5–) 2–20 (–32) cm;
    petiole: long hairs soft to stiff, sometimes absent, spreading to ± appressed, glands usually absent or sparse;
    leaflets 7–21 (–41), on distal (1/4–) 1/3 to whole leaf axis, overlapping or not, oblanceolate to obovate, oblong, cuneate, flabellate, or elliptic, margins flat, distal (1/4–) 1/2 to whole length evenly or unevenly incised ± 1/2 to completely to midvein, rarely entire, teeth (0–) 1–5 (–7) per side, surfaces ± similar, green to whitish, sometimes glaucous, long hairs, if present, soft to stiff, cottony hairs usually absent, sometimes sparse to dense (P. breweri).
    Inflorescences (1–) 2–15 (–25) -flowered, usually ± cymose, sometimes racemiform when prostrate, ± compact (P. arizonica) to very open.
    Pedicels recurved or straight in fruit, (0.5–) 1–4 (–6) cm, proximal often not much longer than distal.
    Flowers 5-merous;
    hypanthium 2–6 mm diam.;
    petals yellow, narrowly to broadly obcordate, (3.5–) 4–10 (–12) mm, equal to or longer than sepals, apex usually ± retuse;
    stamens (15–) 20;
    styles subapical, filiform, often papillate-swollen in proximal 1/5 or less, (1.5–) 2–3.5 mm.
    Achenes smooth to faintly rugose (± rugose in P. basaltica).