Keel is characteristic of the flowers of:
Tulip
Indigofera
Aloe
Tomato
Keel petal is a characteristic feature of plants belonging to the family Fabaceae/ Leguminoseae. Indigofera belongs to Fabaceae.
How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths of their flowers?