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Penstemon cobaea
Also called Prairie Penstemon, Wild Foxglove, Cobaea Penstemon
Penstemon cobaea is a flowering plant in the plantain family, commonly known as Cobaea beardtongue, prairie penstemon or foxglove penstemon. The plant is native to the central United States, primarily the Great Plains from Nebraska to Texas, with additional populations in the Ozarks of Missouri and Arkansas. There are also populations reported in the southwestern United States as well as in Illinois and Ohio, but these appear to be introductions.
The flowers of Penstemon cobaea will eventually become brown and black capsules, which contain the seeds. After planting, the seeds will take about two years to flower. It is good to leave 40 to 50 cm (16 to 20 in) between plants when gardening, and lime is often needed in the soil.
Cobaea beardtongue is native to the plains of the United States from Texas north to Nebraska and east to Arkansas and Iowa. In Texas it is mainly grows in the central part of the state from Victoria northwards to Oklahoma. There it grows in the larger eastern side of the state and is unknown in the Oklahoma panhandle. It also grows in the eastern two-thirds of Kansas, but only in the far south eastern corner of Nebraska. Most of its range in Missouri is in the south bordering the main population in Arkansas. The exact location in Iowa is not recorded.
Firleaf beardtongue · Stemless beardtongue · Sharpleaf penstemon · Los Alamos beardtongue · Alberta beardtongue · White penstemon · White River Beardtongue · Whitemargin beardtongue · Gilia beardtongue · Penstemon angelicus · Siskiyou beardtongue · Broadbeard beardtongue
Text excerpted from the Wikipedia article Penstemon cobaea 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.
