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2. Saxifraga sect. Irregulares Haworth, Misc. Nat. 158. 1803.
石荷叶组 shi he ye zu
Diptera Borkhausen.
Herbs perennial, forming erect individuals, lacking basal bulbils. Leaves alternate, all basal, petiolate; leaf blade herbaceous or leathery, lacking chalk glands, margin lobed; foliar crystals present mainly as druses. Flowering stem usually scapose; inflorescence cymose. Flowers bisexual, zygomorphic, 5-merous. Petals white or pink, not callose. Filaments clavate; pollen 2-nucleate, exine tectum smooth. Carpels connate at least proximally, dehiscing distally in fruit. Ovary superior. Integuments 2.
About ten species: China, Japan; seven species (four endemic) in China.
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| 1 |
Stolons arising from axils of basal leaves, filiform |
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20 S. stolonifera |
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Stolons absent. |
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(2) |
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| 2 (1) |
Leaf blade peltate or ovate to broadly so, or elliptic to oblong, abaxially sometimes brown spotted. |
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(3) |
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Leaf blade reniform to orbicular, abaxially usually concolorous. |
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(4) |
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| 3 (2) |
Leaf blade peltate or ovate to broadly so, abaxially brown spotted |
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18 S. mengtzeana |
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Leaf blade elliptic to oblong |
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14 S. kwangsiensis |
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| 4 (2) |
Leaf blade with foliar embryos in sinus adaxially |
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19 S. epiphylla |
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Leaf blade without foliar embryos. |
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(5) |
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| 5 (4) |
Longest petal serrate at margin |
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17 S. fortunei |
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Longest petal entire at margin. |
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(6) |
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| 6 (5) |
Flowering stem and inflorescence reddish long glandular villous |
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15 S. rufescens |
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Flowering stem and inflorescence shortly glandular pubescent |
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16 S. imparilis |
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Lower Taxa
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