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Sedum Linnaeus. Stonecrop, Orpine, Sedum.

Key to Sedum

A genus of perhaps 200 species, depending on circumscription. There is considerable controversy about the circumscription of the genus Sedum. Diamorpha is usually separated, but Thiede & Eggli (2007) include it in Sedum. The removal from Sedum of the plants treated here in genera Aizopsis, Hylotelephium, Petrosedum, Phedimus, and Rhodiola is uncontroversial. Other segregates from Sedum which would affect the species treated in our region (native and non-native) have been proposed, such as Chetyson, Clausenellia, and Oreosedum (see synonymy); these remain controversial, with some advocating for them and others for a broad (remnant of) Sedum. The circumscription of a broad remnant of Sedum should likely also include Diamorpha and Lenophyllum.

Key advice:Species of Sedum additional to those treated here are grown as ornamentals, especially in rock gardens; some are aggressive and rather weedy and can be expected eventually to become a naturalized part of our flora.

Ref: Calie (1981); Clausen (1975); Messerschmid et al. (2020); Nikulin et al. (2016); Ohba (2009) In Flora of North America Editorial Committee (2009); Thiede & Eggli (2007) In Kubitzki, Bayer, & Stevens (2007). Show full citations.

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image of plant© Keith Bradley | Sedum ternatum | Original Image ⭷
image of plant© Edwin Bridges | Sedum ternatum | Original Image ⭷
image of plant© Erik Danielson | Sedum acre source | Original Image ⭷
image of plant© Gary P. Fleming | Sedum pulchellum | Original Image ⭷
image of plant© Keith Bradley | Sedum pusillum | Original Image ⭷
image of plant© Bruce A. Sorrie | Sedum nuttallii | Original Image ⭷


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