ArgumentThe historiography of botanical maps has mainly concentrated on their alleged
“golden age,” on maps drawn by famous first-generation
plant geographers. This article instead describes botanical maps after the age
of discovery, and detects both a quantitative explosion and qualitative
modification in the late nineteenth century. By spotlighting the case of the
plant geographer Oscar Drude (1852–1933), I argue that the dynamics
of botanical mappings were closely linked to a specific milieu of knowledge
production: the visual culture of Imperial Germany. The scientific upgrading of
maps was stimulated by a prospering commercial cartographical market as well as
a widespread practice of mediating between professionals and amateurs via maps
in the public sphere. In transferring skills and practices from these
“popular” fields of knowledge to scientific domains,
botanists like Oscar Drude established maps as an indispensable element of
botanical observation. This wholesale dissemination of botanical maps had thus a
formative influence on collective perception – the
botanist's “period eye” – regarding
plant distribution.