| 1 | Hypanthium densely covered with long stipitate glandular hairs, 0.3–0.6 mm long; flowering stem glabrous or sparsely hairy | Saxifraga rivularis subsp. arctolitoralis |
| – | Hypanthium sparsely covered with short stipitate glandular hairs, 0.1–0.3 mm long; flowering stem sparsely to densely hairy | Saxifraga rivularis subsp. rivularis |
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