People United States of America Michael Howard Grayum peoplepill id: michael-howard-grayumMHG 3 views today 3 views this weekAmerican botanistMichael Howard GrayumBiographyListsAlso ViewedListsMichael Howard Grayum is in following listsBy field of workNotable American scientistsGender:MaleBy work and/or countryNotable American ScientistsGender:MaleNotable American BotanistsGender:MaleFrom our partnersSponsoredMichael Howard Grayum