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FOC | Family List | FOC Vol. 9 | Rosaceae | Potentilla

6. Potentilla sect. Potentilla

钉状花柱组 zhu zhuang hua zhu zu

Herbs perennial. Basal leaves palmate or 3-foliolate, rarely pinnate. Ovary glabrous; style subterminal, clavate, tapered toward base, thickened at apex.

About 20 species: mainly temperate and subarctic regions of N hemisphere; eight species (one endemic) in China.

1 Flowering stems erect or ascending.   (2)
+ Flowering stems prostrate or horizontally creeping.   (5)
2 (1) Leaves pinnate with 2 or 3(or 4) pairs of leaflets.   81 P. fragarioides
+ Leaves 3-foliolate.   (3)
3 (2) Plants stellate hairy throughout.   80 P. acaulis
+ Plants pilose or glabrescent throughout, not stellate hairy.   (4)
4 (3) Leaflets abaxially pilose or glabrescent; flowers 1–2 cm in diam.; epicalyx segments oblong, apex rounded; anthers basifixed, subglobose or ovoid, minute.   79 P. gelida
+ Leaflets abaxially spreading strigose or densely hairy; flowers 0.8–1 cm in diam.; epicalyx segments lanceolate, apex acuminate; anthers dorsifixed, ellipsoid, larger.   82 P. freyniana
5 (1) Leaves palmately 5-foliolate.   (6)
+ Leaves 3-foliolate.   (7)
6 (5) Flowers 1.5–2.2 cm in diam.; epicalyx segments usually broad, enlarged and leaflike after anthesis, apex obtuse or acute; leaflets obovate-oblong, margin regularly obtusely or rarely acutely serrate.   84 P. reptans
+ Flowers 1–1.5 cm in diam.; epicalyx segments narrow, not enlarged after anthesis, apex acuminate, rarely acute; leaflets oblong-lanceolate, margin irregularly acutely or acuminately serrate.   86 P. flagellaris
7 (5) Lateral leaflets 2-lobed or 2-parted.   84 P. reptans
+ Leaflets neither lobed nor parted.   (8)
8 (7) Leaflets rhombic-ovate, rhombic-obovate, or broadly elliptic, margin sharply serrate (teeth fasciated ovate) or doubly serrate; stolons curved and zigzagged; flowers 1.5–2 cm in diam.   83 P. rosulifera
+ Leaflets obovate or elliptic, margin regularly acutely or obtusely serrate; stolons not curved nor zigzagged; flowers 0.7–1 cm in diam.   85 P. simulatrix

Lower Taxa


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