''Penstemon tenuiflorus'', commonly known as eastern whiteflower beardtongue, is a species of flowering plant in the plantain family. It is native only to a small area of the

Southeastern United States The Southeastern United States, also referred to as the American Southeast or simply the Southeast, is a geographical region of the United States. It is located broadly on the eastern portion of the southern United States and the southern por ...

, in the southern

Interior Low Plateau The Interior Low Plateaus are a physiographic region in eastern United States. It consists of a diverse landscape that extends from north Alabama across central Tennessee and Kentucky into southern Illinois, Indiana, and Ohio. Its natural communi ...

and Black Belt of Alabama and Mississippi. Its preferred habitat is limestone glades and woodlands.The Comparative Biology of the Two Related Species ''Penstemon tenuiflorus'' Pennell and ''P. hirsutus'' (L.) Willd. (Scrophulariaceae, Section Graciles): IV. Effects of Shade, Drought, and Soil Type on Survival and Growth
Richard K. Clements, Jerry M. Baskin and Carol C. Baskin ''Castanea'', Vol. 67, No. 2 (Jun., 2002), pp. 177-187

References

tenuiflorus Flora of the Southeastern United States Flora without expected TNC conservation status {{Plantaginaceae-stub