Espostoa melanostele (Peruvian Old Lady) is a slow-growing columnar cactus with stems densely covered with white wool, hiding the body …
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Epithet: melanostele
Meaning: Having a black (or dark) column
Derivation: A Latinized compound epithet made of two Ancient Greek elements: the combining form "μελανο– (melano-)" of the adjective "μέλᾱς (mélās)," meaning "dark in color, black," and the noun "στήλη (stḗlē)," meaning "stele; column or stalk."
Pronunciation: meh-lan-oh-STEE-lee
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.