A Brief Survey of the Rare Terrestrial Natural Communities and Associated Vascular Flora of the Wabash River Corridor in Indiana.
ABSTRACT. Along the Wabash River corridor in Indiana there exists an array of rare terrestrial natural communities that includes such diverse examples as cliffs, seepage wetlands, prairies, flatwoods, and bald cypress swamps. Many examples are quite small, existing either naturally in small patches, or as remnants of a formerly more extensive occurrence. Many possess rare species, including several that in Indiana are mostly confined to the corridor. Examples include Tennessee milk-vetch (Astragalus tennesseensis), water locust (Gleditsia aquatica), Amazon sprangletop (Leptochloa panicoides), Lesquereux’s mustard (Lesquerella globosa), cylindric-fruited seedbox (Ludwigia glandulosa), plains muhlenbergia (Muhlenbergia cuspidata), glade mallow (Napaea dioica), Canada burnet (Sanguisorba canadensis), Forbes’ saxifrage (Saxifraga forbesii), and woodland pinkroot (Spigelia marilandica). Keywords: Wabash River, Indiana rare vascular plants, Indiana rare natural communities