Question: Which genus has more species, Acanthus or Clematis?
Sentence (from "Clematis"): Most species are known as clematis in English, while some are also known as traveller's joy, a name invented for the sole British native, "C. vitalba", by the herbalist John Gerard; virgin's bower for "C. viticella"; old man's beard, applied to several with prominent seedheads; leather flower for those with fleshy petals; or vase vine for the North American "Clematis viorna".
Relevant evidence: Yes