Definition that contains sometimes
- paris sometimes placed in subfamily Trilliaceae
- bluebell sometimes placed in genus Scilla
- convallaria sometimes placed in family Convallariaceae: lily of the valley
- liriope sometimes placed in family Convallariaceae: lilyturf
- family hydrangeaceae sometimes included in the family Saxifragaceae
- genus bison sometimes considered a subgenus of genus Bos: American buffalo
- harebell sometimes placed in genus Scilla
- ascidiaceae sometimes classified as an order: sea squirts
- wild hyacinth sometimes placed in genus Scilla
- ornithogalum sometimes placed in family Hyacinthaceae