Sibbaldia Linnaeus. Common name: Sibbaldia, Mountain-cinquefoil.
A genus of 10-15 species, subshrubs, circumboreal, of n. Eurasia and n. North America. Our single species has been variously treated in Potentilla, Sibbaldiopsis, and Sibbaldia. Many recent studies (see references) have shown that it is not closely related to Potentilla, and falls into a group of genera including Sibbaldia, Comarum, Alchemilla, Aphanes, Drymocallis, Dasiphora, and Fragaria (Lundberg et al. 2009; Potter et al. 2007; Eriksson et al. 2003; Eriksson et al. 2015). We follow Lundberg et al. (2009) and Paule & Soják (2009), who further demonstrate that Sibbaldiopsis is embedded in Sibbaldia and is best transferred there. Erikkson et al. (2015) showed that different components placed in Sibbaldia are not closely related; they somewhat equivocally include our species in Sibbaldia s.s., but mention the morphological differences and tetraploid chromosome number as making it somewhat discordant in Sibbaldia s.s. More recent studies (Eriksson, pers.comm., 2024) showed two allopolyploid events between members of Sibbaldia and Sibbaldianthe, one resulting in Sibbaldiopsis tridentata; because of this reticulation, it therefore seems best to recognize this group as a single genus.
Subfamily: Rosaceae. Tribe: Potentilleae. Subtribe: Fragariinae.References: Bresowar & Walker (2011); Eriksson et al. (2003); Eriksson et al. (2015); Eriksson, Donoghue, & Hibbs (1998); Ertter & Reveal (2014b) In Flora of North America Editorial Committee (2014); Ertter, Elven, & Reveal (2008); Feng et al. (2017); Kalkman In Kubitzki et al. (2004); Lundberg et al. (2009); Paule & Soják (2009); Potter et al. (2007). Show full citations.
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