Identity, Occurrence and Typification of Sida angustifolia (Malvaceae), a Neglected Species in India

Sida angustifolia (Malvaceae) was erroneously identified as S. spinosa and synonymized under it. The taxonomic identity and distribution of S. angustifolia is discussed and the binomial is lectotypified. A detailed description, illustration, photographs, and distribution map of S. angustifolia are provided and its morphological differences from S. spinosa are elucidated.