3 January 1931, Kuusamo) is a Finnish botanist, plant taxonomist, and plant collector noted for being Associate Professor of Botany at the University of Helsinki, and later the Director of the university's Botanical Garden.
[1] She primarily studies alpine plants of Finland and similar northern hemisphere climates.
[5] She participated in the production of the seminal Finnish floras Retkeilykasvio (1984, 1998) and Suomen puu- ja pensaskasvio (1992).
Hämet-Ahti won the Finnish Cultural Foundation prize in 1990[6] and the Finnish Biological Society Vanamo [fi] silver Kairamo medal in 2007 "in recognition of her many merits in botany, university teaching, science popularisation and fostering Finnish cultural heritage".
[7] Her book Maarianheinä, mesimarja ja timotei won a State Public Information Award [fi] in 1987 and her Suomen puu- ja pensaskasvio was selected as Science Book of the Year [fi] in 1989.