Physaria filiformis
Cedar Fourche Recreation Area (USACE), N side of Lake Ouachita, along Cedar Fourche Road, 1.3 miles W of junction with Harper Grocery Road, ca. 7 air miles NW of Mountain Pine. Shale glade complex across road from parking lot; barrens openings in woodland with Juniperus, Pinus, Quercus, Ulmus. Ca. 250 plants, widely scattered, mostly around edges of gladey openings; with Minuartia, Valerianella, Liatris, Triodanis, lichens.