Which is more widely distributed, Persicaria or Ammi?
Persicaria Persicaria is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds. It has a cosmopolitan distribution, with species occurring nearly worldwide. The genus was segregated from "Polygonum".
Ajwain Ajwain, ajowan ( ) Trachyspermum ammi, also known as Ajowan caraway, Oomam (ஓமம்) in Tamil bishop's weed or carom, is an annual herb in the family Apiaceae. It originated in India. Both the leaves and the fruit (often mistakenly called seeds) of the plant are consumed by humans. The plant is also called bishop's weed, but this is a common name it shares with some other different plants. The "seed" (i.e., the fruit) is often confused with lovage "seed".