This genus of 25 to 30 species consists of annuals, biennials and herbaceous perennials. It is native to a wide range of temperate, tropical and subtropical areas of Africa, Asia and Europe.
This
genus of 25 to 30 species consists of
annuals,
biennials and
herbaceous perennials. It is native to a wide range of
temperate, tropical and subtropical areas of
Africa,
Asia and
Europe. 
