''Willisia'' is a genus of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s belonging to the family

Podostemaceae Podostemaceae (riverweed family), a family in the order Malpighiales, comprise about 50 genera and species of more or less thalloid aquatic herbs. Distribution and habitat They are found mostly in tropical and subtropical areas worldwide. Ma ...

. It is native to

Bangladesh Bangladesh (}, ), officially the People's Republic of Bangladesh, is a country in South Asia. It is the eighth-most populous country in the world, with a population exceeding 165 million people in an area of . Bangladesh is among the mos ...

and

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

. Known species: * '' Willisia arekaliana'' Shivam. & Sadanand * '' Willisia selaginoides'' (Bedd.) Warm. ex Wille The genus name of ''Willisia'' is in honour of

John Christopher Willis John Christopher Willis FRS (20 February 1868 – 21 March 1958) was an English botanist known for his Age and Area hypothesis and criticism of natural selection. Education Born in Liverpool, he was educated at and University College, Liverpoo ...

(1868–1958), an English botanist known for his 'Age and Area hypothesis' and his criticism of

natural selection Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. Charle ...

. It was first described and published in Kongel. Danske Vidensk. Selsk. Skr., Naturvidensk. Math. Afh., series 6, Vol.11 (1) on page 58 in 1901.

References

{{Taxonbar, from=Q10393752 Podostemaceae Podostemaceae genera Plants described in 1901 Flora of India (region) Flora of Bangladesh