Purshia tridentata (Pursh) de Candolle (Q3870)
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Purshia tridentata is a taxon with the rank species within the genus Purshia
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English |
Purshia tridentata (Pursh) de Candolle
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Purshia tridentata is a taxon with the rank species within the genus Purshia
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Statements
taxon/id/Purshia tridentata (Pursh) de Candolle
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Purshia tridentata (Pursh) de Candolle
Purshia tridentata
(Pursh) de Candolle
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-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-BC
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US-AZ
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US-CA
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US-CO
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US-ID
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US-MT
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US-NM
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US-NE
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US-NV
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US-OR
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US-UT
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US-WA
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US-WY
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Shrubs, evergreen or partially summer–winter-deciduous, 2–25 (–40) dm.
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Stems: young-stem internodes 4–12 mm, sparsely to densely arachnoid-villous, ± hirtellous, or glabrous, stipitate-glandular or not;
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Leaves: blade of 1 or 2 types: (1) persistent, dark green adaxially, obovate to spatulate, 4–9 × (1–) 3–6 mm, irregularly lobed in distal 1/3, lobes 3 (–5), lobes entire, ± terete, central lobe deflexed, often apiculate, 2 lateral ascending, margins strongly revolute, abaxial surface arachnoid-villous, midvein glabrous, glabrate, or hirtellous, adaxial glabrous, sometimes arachnoid-villous or hirtellous, often glandular-punctate along margins;
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(2) winter deciduous, green-gray adaxially, flabelliform, 6–15+ × 3–7+ mm, margins weakly revolute, usually 3-toothed, sometimes 3-lobed, distally, abaxial surface arachnoid-villous to arachnoid-tomentose, veins ± glabrate, adaxial hirtellous and ± arachnoid villous, sometimes sessile or stipitate-glandular along margins.
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Pedicels 0.2–2.5 mm.
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Flowers: hypanthium obconic, 2.5–5 × 1.5–3 mm, 3.5–6 mm diam. in fruit, pubescent-sericeous, sessile or stipitate-glandular;
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petals usually lemon to cream-yellow, sometimes nearly white, obovate-spatulate, 4–7+ mm;
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Achenes broadly obovoid-fusiform (circular in cross-section or flattened on common side when paired), 7–12 × 3.5–5.2 mm, 15–22-veined, persistent style 5–7 (–10) mm, densely hirtellous.
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summer-winter-deciduous
partially
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arachnoid-villous
sparsely to densely; densely
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