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1. Potentilla sect. Rhopalostylae (Th. Wolf) Gusuleac in Savulescu, Fl. Reipubl. Popularis Roman. 4: 601. 1956.
棒状花柱组 bang zhuang hua zhu zu
Potentilla subsect. Rhopalostylae Th. Wolf, Biblioth. Bot. 16(Heft 71): 44. 1908.
Shrubs or subshrubs. Basal and cauline leaves pinnate, rarely 3-foliolate; leaflets entire or 2-lobed at apex. Ovary densely hairy or only sparsely so at hilum or apex, rarely glabrous; style sub-basal or lateral, clavate, thin proximally, thickened at apex.
About five species: temperate and subarctic regions of N hemisphere; five species in China.
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| 1 |
Herbs short or woody based; leaflets usually 2-fid, rarely entire, base not articulate at connection with petiole; ovary pilose around hilum or apex when young, glabrescent at maturity or only sparsely pilose at the apex, glabrous at maturity; style lateral. |
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(2) |
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Shrubs with woody stems above ground; leaflets entire, base articulate at connection with petiole; ovary densely villous; style sub-basal. |
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(3) |
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| 2 (1) |
Leaflets usually opposite, rarely alternate, both surfaces sparsely pilose or subglabrous. |
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4 P. bifurca |
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Leaflets usually alternate, densely softly gray pubescent. |
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5 P. imbricata |
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| 3 (1) |
Petals white. |
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2 P. glabra |
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Petals yellow. |
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(4) |
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| 4 (3) |
Leaves pinnate with 2 pairs of leaflets, rarely 3-foliolate, leaflets oblong, obovate-oblong, or ovate- lanceolate, 3–20 × 3–10 mm. |
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1 P. fruticosa |
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Leaves pinnate with 2 or 3 pairs of leaflets, basal 2 pairs usually palmately arranged or appearing whorled, rarely leaves 3-foliolate, leaflets lanceolate, linear-lanceolate, or obovate-lanceolate, 5–10 × 2–5 mm. |
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3 P. parvifolia |
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Lower Taxa
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