George Engelmann : botanical notebook 19 : Asclepiadaceae, Apocynaceae, Oleaceae, Sapotaceae, Primulaceae, Gesneriaceae, Bignoniaceae, Acanthraceae, Verbenaceae, Labiatae, Plantaginaceae 1827-1882
1870-1880
CLIR
Copyright Status:
Public domain. The BHL considers that this work is no longer under copyright protection.