Book ID: 9016
Shetler,S.G. and L.E.Skog (eds.)
A provisional checklist of species for Flora North America,(Revised)1978.(Monographs in Syst.Botany 1). XIX,199 p.
Catalogues 16,274 species in 2,350 genera and 233 families of vascularplants known from the Flora North America area-continental United StatesCanada and Greenland.