Difference between revisions of "Potentilla villosula Jurtzev in A. I. Tolmatchew (Q4012)"
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Latest revision as of 13:32, 24 June 2022
Potentilla villosula is a taxon with the rank species within the section Potentilla sect. Niveae
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Potentilla villosula Jurtzev in A. I. Tolmatchew
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Potentilla villosula is a taxon with the rank species within the section Potentilla sect. Niveae
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Statements
taxon/id/Potentilla villosula Jurtzev
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Potentilla villosula Jurtzev
Potentilla villosula
Jurtzev
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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CA-AB
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Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.
CA-BC
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Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
CA-NT
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Vascular Plant Herbarium (DAO), Agriculture and Agri-Food Canada, Ottawa, ON. http://res2.agr.ca/ecorc/dao/index_e.htm
CA-YT
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Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
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CA-BC
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CA-YT
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US-AK
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Plants densely tufted.
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Caudex branches stout, sometimes ± columnar, not sheathed with marcescent whole leaves.
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Stems ascending to erect, 0.2–1.5 (–2) dm, lengths 1.5–3 (–4) times basal leaves.
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Basal leaves 1–5.5 (–7) cm;
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petiole 0.5–3.5 (–5) cm, long hairs common to dense, ascending to spreading, loosely appressed, sometimes retrorse, 1–2 (–3) mm, soft, smooth, crisped/short-cottony hairs usually sparse, sometimes common, glands absent or sparse to common or obscured;
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leaflets overlapping, central broadly obovate to obtriangular, 0.8–2.5 × 0.6–2 cm, sessile to subsessile, base broadly cuneate, margins revolute, distal 1/2–2/3 (–3/4) incised ± 1/2 to midvein, teeth 2–3 (–4) per side, ± approximate to ± distant, surfaces ± dissimilar, abaxial grayish to white or yellowish white, long hairs 1.5–2.5 mm, cottony-crisped hairs ± dense, adaxial grayish green, long hairs abundant to dense, crisped hairs absent, sparse, or obscured.
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Cauline leaves (0–) 1–2 (–3).
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Inflorescences (1–) 2–3 (–4) -flowered.
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Pedicels 0.5–3 (–5) cm in flower, to 4 (–6) cm in fruit.
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Flowers: epicalyx bractlets broadly lanceolate to narrowly ovate, 3–7 (–8) × 1.5–3 (–3.5) mm, 2/3 to as wide as sepals, margins ± revolute, red-glands absent;
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hypanthium (3–) 4–6 mm diam.;
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sepals 4–7 (–8) mm, apex acute or rarely acuminate;
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petals 5–10 × 6–12 mm, significantly longer than sepals;
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filaments 1.1–1.4 mm, anthers 0.5–0.8 mm;
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carpels 40–70, apical hairs absent or sparse (straight), styles narrowly columnar to conic-tapered, papillate-swollen in proximal 1/5 or less, 1–1.2 mm.
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Achenes 0.9–2 mm. 2n = 28 (Russian Far East).
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columnar
sometimes more or less
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1.5-3(-4) times basal leaves
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broadly lanceolate
narrowly ovate
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grayish
white or yellowish white
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