Curtis-Beauchamp Natural Area
Geology and Topography
Curtis-Beauchamp Natural Area is situated on a ridge and attendant slope near the western edge of the southern extension of the Mitchell karst plain. The area is characterised by Pennsylvanian age sandstone capped ridges and Mississippian age limestone in the valleys.There are numerous sinkholes and no permanent above ground streams. The ridges are underlain by an impermeable layer of loess called a fragipan. Consequently, drainage is horizontal rather than vertical and numerous seeps occur along the edge of the ridges.
History
Early settlers to the area encountered large treeless areas which they called "barrens". These barrens had a rich flora of prairie forbs and grasses. The old buffalo trace that ran from the Falls of the Ohio to Vincennes is located about two miles to the north of the property.
The property was purchased from the Beauchamp family about 1963. The severely eroded old field
on the south end of the ridge was planted in pines. Several pits along the edge of the ridge are evidence that sandstone was mined at some time in the past.
Vascular Plants From a wet-dry ridge
forest to a mesic lowland forest, Curtis-Beauchamp has a diverse flora with
over 360 species of vascular plants found to date. The diversity of plant species can be attributed, at least in part, to a variety of microhabitats. Several open areas, including a central limestone glade, provide habitat for prairie and glade species. There is a significant wetland component due to numerous seeps along the edge of the ridge. There are rock outcrops, both limestone and sandstone. The deep ravine that runs near the northwestern edge
of the property has a good variety of spring wildflowers.
One of only four populations of the
state endangered Devil's-Bit (Chamaelirium luteum) is found here along with several other rare or
uncommon species which include Early Ladies'-Tresses (Spiranthes vernalis), Hairy Small Skullcap (Scutellaria parvula var. australis) and Limestone Adder's Tongue (Ophioglossum englemannii). Nine species of native orchids have been found and Yellow Lady's Slipper has been reintroduced.
Endangered, Threatened and Rare Plant List
What's happening at Curtis-Beauchamp Wildflower Pictures Click on links below to go to
thumbnail pages.
Late Summer and Fall Wildflowers Newest Lepidoptera find at Curtis-Beauchamp