- Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
Soltis et al. (2001) showed that the traditionally defined Saxifraga is not monophyletic and that several of our species must be segregated. These taxa not related to the core species of Saxifraga are placed in the genus Micranthes. Reference: Brouillet and Elvander (2009b).
1b. Leaves alternate or ± all basal [Fig. 905], those borne on a stem not closely imbricate; petals white or yellow
2a. Primary leaves with orbicular to reniform blades that have 3–7 palmately arranged, tooth like lobes and are borne on evident petioles [Fig. 906]
2b. Primary leaves with narrow-oblong or lanceolate to to obovate or obovate-oblong blades, entire or toothed, sessile or tapering to the base [Fig. 905]
Show photos of: Each photo represents one species in this genus.