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Physaria filiformis
Also called Limestone Glade Baldderpod, Limestoneglade Bladderpod
Physaria filiformis (syn. Lesquerella filiformis) is a rare species of flowering plant in the family Brassicaceae known by the common names Missouri bladderpod and limestone glade bladderpod. It is native to Missouri and Arkansas in the United States. It was federally listed as an endangered species in 1987 and it was downlisted to threatened status in 2003. P. filiformis remains listed as an endangered species at the state level in Missouri.
Physaria filiformis grows in limestone glades and outcrops of bare bedrock in southwestern Missouri and northwestern Arkansas. The surrounding habitat may be prairie and pasture. Several types of forest may be adjacent to the glades. The soil is shallow on the glades and supports few other plants. The plant grows less often in more vegetated areas with deeper soils, probably because other plants successfully compete with it there. It is also less abundant in the shady understory of Juniperus virginiana forest, as sunlight is a limiting factor in its growth. It can be found in a number of microhabitats, a factor that is important in its management and conservation. Wildfire is important in the maintenance of the limestone glade habitat and even more so its surrounding ecotones. Fire is the mechanism that keeps these habitats open and free of large and woody vegetation that shade out small annuals. Fire prevents ecological succession in the open habitat where the plant grows.
Bladderpod · Avery Peak twinpod · Arctic Bladderpod · Front Range twinpod · Chambers' twinpod · Dudley Bluffs Bladderpod · Common twinpod · Fendler's Bladderpod · Pointtip twinpod · Fremont Bladderpod · Globe Bladderpod · Bladderpod
Text excerpted from the Wikipedia article Physaria filiformis by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
