| 1 |
Plants with stolons. |
|
(2) |
| + |
Plants without stolons. |
|
(5) |
| |
|
|
|
| 2 (1) |
Radical leaves more than 10 at flowering. |
|
(3) |
| + |
Radical leaves absent or fewer than 4 at flowering. |
|
(4) |
| |
|
|
|
| 3 (2) |
Pedicels with scalelike bracts. |
|
30 P. gombalana |
| + |
Pedicels without scalelike bracts. |
|
29 P. anserina |
| |
|
|
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| 4 (2) |
Leaves adaxially sericeous, teminal leaflet elliptic. |
|
32 P. taronensis |
| + |
Leaves adaxially subglabrous, terminal leaflet rhombic-elliptic. |
|
31 P. smithiana |
| |
|
|
|
| 5 (1) |
Cauline leaves more than 4. |
|
(6) |
| + |
Cauline leaves 1–3. |
|
(10) |
| |
|
|
|
| 6 (5) |
Auricles of stipules of radical leaves connate from base to middle. |
|
12 P. festiva |
| + |
Auricles of stipules of radical leaves free. |
|
(7) |
| |
|
|
|
| 7 (6) |
Peduncle and hypanthium without gland-tipped, multicellular hairs. |
|
15 P. polyphylla |
| + |
Peduncle and hypanthium with gland-tipped, multicellular hairs. |
|
(8) |
| |
|
|
|
| 8 (7) |
Stigma not inflated; leaflets abaxially densely silvery sericeous, distal lateral ones cuneate at base. |
|
13 P. lineata |
| + |
Stigma inflated; leaflets abaxially sparsely strigose, distal lateral ones rounded at base. |
|
(9) |
| |
|
|
|
| 9 (8) |
Epicalyx segments shorter than sepals, margin subentire; style nearly 2 × as long as ovary. |
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14 P. fallens |
| + |
Epicalyx segments longer than sepals, margin with 3–7 teeth; style ca. 1.5 × as long as ovary. |
|
16 P. polyphylloides |
| |
|
|
|
| 10 (5) |
Apical pair of leaflets sessile, but not decurrent at base. |
|
(11) |
| + |
Apical pair of leaflets decurrent at base. |
|
(15) |
| |
|
|
|
| 11 (10) |
Smaller leaflets usually present between leaflets. |
|
21 P. turfosa |
| + |
Smaller leaflets usually not present between leaflets. |
|
(12) |
| |
|
|
|
| 12 (11) |
Rhizome with a few slender, elongate roots. |
|
20 P. aristata |
| + |
Rhizome without slender, elongate roots. |
|
(13) |
| |
|
|
|
| 13 (12) |
Stamens 5–8(–10). |
|
19 P. glabriuscula |
| + |
Stamens ca. 20. |
|
(14) |
| |
|
|
|
| 14 (13) |
Leaflets 2–4 mm. |
|
17 P. microphylla |
| + |
Leaflets 5–15 mm. |
|
18 P. stenophylla |
| |
|
|
|
| 15 (10) |
Inflorescence pseudoumbellate. |
|
(16) |
| + |
Inflorescence cymose. |
|
(17) |
| |
|
|
|
| 16 (15) |
Auricles of stipules of radical leaves 2. |
|
27 P. leuconota |
| + |
Auricle of stipules of radical leaves 1. |
|
28 P. wenchuensis |
| |
|
|
|
| 17 (15) |
Rhizome erect. |
|
(18) |
| + |
Rhizome creeping. |
|
(19) |
| |
|
|
|
| 18 (17) |
Auricles of stipules of radical leaves 2. |
|
24 P. cardotiana |
| + |
Auricle of stipules of radical leaves 1. |
|
25 P. commutata var. polyandra |
| |
|
|
|
| 19 (17) |
Auricles of stipules of radical leaves 2, apex acute. |
|
23 P. contigua |
| + |
Auricle of stipules of radical leaves 1, apex rounded. |
|
(20) |
| |
|
|
|
| 20 (19) |
Flowering stems and petioles sericeous and appressed villous. |
|
22 P. peduncularis |
| + |
Flowering stems and petioles densely canescent tomentose, tomentose- villous, or sericeous-villous. |
|
26 P. tugitakensis |
