Crassula Linnaeus.
A genus of 195-250 species, nearly cosmopolitan (centered in s. Africa). Mort et al. (2009) provide strong evidence supporting the inclusion of Tillaea in Crassula.
Ref: Bywater & Wickens (1984); Moran (2009b) In Flora of North America Editorial Committee (2009); Mort et al. (2009); Thiede & Eggli (2007) In Kubitzki, Bayer, & Stevens (2007). Show full citations.
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