largely

enimmäkseen, pääasiassa In a widespread or large manner.
For the most part; mainly or chiefly.
(RQ:Schuster Hepaticae V)

Herbarium material does not, indeed, allow one to extrapolate safely: what you see is what you get; what you get is classical alpha-taxonomy which is, very largely and for sound reasons, in disrepute today.

(ux)

Usually there was a jug of one or other decoction standing on the hob, from which he drank largely.

"Grand!" he said, smacking his lips after wormwood. "Grand!" And he exhorted the children to try.

It ill beseemes a knight of gentle sort, / Such as ye haue him boasted, to beguile / A simple mayd, and worke so haynous tort, / In shame of knighthood, as I largely can report.