The Indian Association for Angiosperm Taxonomy (IAAT) was established by Dr. K. S. Manilal and his colleagues in the year 1990. The IAAT is head quartered at the Department of Botany, Calicut University, Kozhikode, India.
The IAAT works to promote the science of Angiosperm Taxonomy in India, to provide a common forum for Angiosperm taxonomists in India to organize meetings, hold discussions and exchange ideas on scientific and academic matters, and encourage collaborative work among taxonomists.
The IAAT publishes a journal Rheedea (named after Hendrik van Rheede). The Indian Association for Angiosperm Taxonomy works as an affiliate of the International Association for Plant Taxonomy.