Acanthis

Acanthis (not to be confused with Acanthus) may be:Acanthis (genus), genus of bird, made up of the RedpollAcanthis (mythology), figure in Greek mythologyAcanthis, a lena, or pro­curess, who did all she could to depreciate Propertius and his poems with Cynthia, on account of his want of wealth, and to whom the fifth elegy of his fourth book is addressed.
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[Greek] The sister of Acanthus. When she cried over the death of her brother the gods turned her into a thistle finch.

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small song-bird (thistle/gold finch L+S); groundsel (plant Senecio vulgaris)