Synonyms: Knavel annuum (homotypic); Loeflingia hispanica (heterotypic); Scleranthus annuus collinus; Scleranthus annuus f. annotinus; Scleranthus annuus f. hibernus; Scleranthus annuus f. subglandulosus; Scleranthus annuus f. transiens; Scleranthus annuus var. annotinus; Scleranthus annuus var. biennis; Scleranthus annuus var. hibernus; Scleranthus annuus var. micranthus; Scleranthus biennis; Scleranthus borborygius (homotypic); Scleranthus campestris; Scleranthus cinereus (homotypic); Scleranthus comosus; Scleranthus divaricatus; Scleranthus echinulifer; Scleranthus ferrugineus (homotypic); Scleranthus glaucovirens; Scleranthus intermedius; Scleranthus marginellus (homotypic); Scleranthus tauricus (homotypic); Scleranthus velebiticus; Scleranthus venustus