1 |
Flowering stems erect or ascending. |
|
(2) |
+ |
Flowering stems prostrate or horizontally creeping. |
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(5) |
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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) |
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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 |
|
|
|
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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 |
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