By
Wallace R. Weber, William T. Corcoran, Mark S. Brunell and Paul L. Redfearn, Jr.
November, 2000
During the thirty-seven years since
the publication of Steyermark's
Flora of Missouri (1963), botanists
have continued the process of documenting the number and range of plant taxa in
The county records reported by Steyermark (1963) are shown in solid dots (●). Subsequent reports of new county records are shown in open circles (○). The page number for each taxon in Steyermark's Flora of Missouri follows each name. New taxa for the state have the literature citation listed in parentheses after each name. Because of the numerous reports of new records, it became impractical to indicate their sources on each map. However, these sources are listed in Literature Cited and General References. Taxa are listed alphabetically within families and families are also listed in alphabetic order.
The nomenclature of each taxon follows, with one or two exceptions, Yatskievych & Turner (1990) and Yatskievych (1999). Each species, subspecies, variety and form is mapped separately. In cases where the author chose to report the taxa only at the species level and infraspecific taxa exist, a separate map listing just the species has been prepared to accommodate these reports. This was necessary in recording many of the taxa in Yatskievych (1999) where maps were prepared only at the specific level. In a few taxa, maps are left blank because the literature sources did not indicate a county location.
Many names used in Steyermark (1963) have subsequently been placed in synonymy. These synonyms are listed in brackets following each species name. Most of these entries may be considered as acceptable synonyms. However, a few were simply names misapplied by Steyermark and are indicated by the statement "sensu Steyermark, 1963". For reference purposes only, excluded species are listed but not accompanied by a map.
The index at the end of this report lists accepted names in bold face type.
Dr. Weber had asked several people to aid in the proofreading of the maps. We are not sure who all of these persons were or what parts they examined. Rather than risk listing some but not all, we simply wish to acknowledge and thank them for their help.
Finally, Dr.
Weber's untimely death
made it necessary to complete this atlas without his valuable help. Indeed, he had planned to complete, as one of
the first tasks after his retirement, this atlas. We are sure that one of his objectives would
have been to include all new distribution records for
William C. Corcoran
Paul L. Redfearn, Jr.