Noun physostigma has 1 sense
  1. Physostigma, genus Physostigma - African woody vines: calabar beans
    --1 is a kind of plant genus
    --1 is a member of
     Leguminosae, family Leguminosae, Fabaceae, family Fabaceae, legume family, pea family
    --1 has members: calabar-bean vine, Physostigma venenosum
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