extrapolate

yleistää

ekstrapoloida puhekieltä To infer by extending known information.
(RQ:Schuster Hepaticae V)

With fresh material, taxonomic conclusions are leavened by recognition that the material examined reflects the site it occupied; a herbarium packet gives one only a small fraction of the data desirable for sound conclusions. Herbarium material does not, indeed, allow one to extrapolate safely: what you see is what you get(..)