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5. Saxifraga sect. Mesogyne Sternberg, Revis. Saxifrag. Suppl. 2: 29. 1831.
球茎组 qiu jing zu
Herbs perennial, forming erect individuals, with bulbils present in axils of at least basal leaves. Leaves alternate, petiolate; leaf blade herbaceous, lacking chalk glands and crystals, margin toothed or lobed. Flowering stem leafy; inflorescence cymose. Flowers bisexual, actinomorphic, 5-merous. Petals white, rarely reddish, not callose. Filaments subulate to linear; pollen 2-nucleate, exine tectum coarsely striate. Carpels connate for most of placental region, dehiscing distally in fruit; ovary subsuperior. Integuments 2.
About eight species: Asia, Europe, North America, mainly in arctic and montane regions; three species in China.
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| 1 |
Bulbils restricted to rhizome, none present in axils of cauline leaves or bracts |
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188 S. sibirica |
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Bulbils present in axils of cauline leaves and/or bracts. |
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(2) |
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| 2 (1) |
Bulbils present in axils of cauline leaves only, not replacing flowers |
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189 S. granulifera |
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Bulbils present in axils of cauline leaves and (where replacing flowers) bracts |
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190 S. cernua |
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Lower Taxa
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