Although it appears quite different, Crassula 'Blue Bird' is actually the same as Crassula arborescens subsp. undulatifolia, a subspecies …
Browsing: undulatifolia
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Epithet: undulatifolia
Meaning: Wavy-leaved; having wavy (undulate) leaves
Derivation: A Latinized descriptive compound epithet formed from the combining form undulati- (derived from the Latin adjective undulātus, meaning "undulated" or "wavy") and -folia (derived from the Latin noun folium, meaning "leaf," used in botanical Latin to form adjectival compounds meaning "-leaved").
Pronunciation: un-dew-lay-tih-FOH-lee-uh
While the generic name must be unique, two or more genera often share the same specific epithet. Moreover, the same epithet can be used for subspecies, varieties, and forms within a species. Here is a list of plants that share this epithet.
Crassula arborescens subsp. undulatifolia (Ripple Jade) is a succulent shrub with stout, fleshy branches that bear wavy, slightly fleshy …