492 PROCEEDINGS OF THE ACADEMY OF [PaRT III 



northeastern Texas, etc. Native also in southern Missouri and 

 widely introduced northeastward to the Atlantic states. 



Arkansas. Clay: Corning, Eggert (M, Y). Izard: Guion, 

 Pennell 10687 (Y). Jefferson: Kearney, Pennell 10657 (C, Y). 

 Nevada: Prescott, Holhster (U). Pope: Russellville, Pennell 10, 

 633 (H, M, U, Y). Pulaski: Little Rock, Pennell 10650 (A, L, Y). 

 Washington: Fayetteville, F. L. Harvey (M). 



Oklahoma. McCurtain: Idabel, Stevens 3623 (U). Pittsburg: 

 McAlester, Pennell 10589 (K, O, S, T, U, Y). 



Louisiana. Caddo: Shreveport, Cocks (L). Natchitoches: 

 Natchitoches, E. J. Palmer 7503- (M). 



Texas. Bowie: Texarkana, Heller 4169 p. p. (A, U). Dallas: 

 Dallas, Reverchon 3220 (Y). Tom Green: San Angelo, Reverchon 

 3933 (M). Van Zandt: Grand Sahne, Reverchon 3934 (M). 



12. Penstemon pentstemon (L.) MacM. 



Chelone -pentstemon L., Sp. PI. 612. 17.53. "Habitat in Virginia." Type not 

 verified, but must have been the species now considered, because in 1753 

 this was certainly tlie only essentially glabrous species of the Atlantic sea- 

 board. 



Penstemon laevigatas Ait., Hort. Kew. 2: 361. 1789. "Chelone Pentstemon 

 J. F. Miller ic. 4 . . . Nat. of North America. Cult. 1776, by John 

 Fothergill, M. D." The description, and also the plate of Miller, clearly 

 denote the species now considered. 



Bartramia pulchella Salisb., Prod. Stirp. Chapel Allerton 99. 1796. New 

 name for Penstemon laevigatas Ait. Type of genus Bartramia Salisb. 



Penstemon ■pentstemon (L.) MacM., in Bull. Torr. Bot. Club. 19: 15. 1892. 



Corolla externally violet-purplish, deepest on tube, on throat 

 and lobes pale-purplish, nearly white on anterior side ; within white, 

 and within throat on anterior side with more or less evident violet 

 lines. Sterile filament with yellow hairs. Flowering in May. 



Meadows, or more rarely open pine-woods, pineland of central 

 Louisiana. From Virginia to northern Florida and Louisiana, 

 inland through the eastern Mississippi Valley to Indiana. 



Arkansas. Hempstead: Fulton (low woods), E. J. Palmer 

 5418 (M). 



Louisiana. Rapides: Alexandria, (dry pine-woods). Ball 616 

 (M, Y). 



13. Penstemon tenuis Small. 



Penstemon tenuis Small, Fl. S. E. Un. St. 1061, 1337. 1903. "Type, La., 

 Hale, Apr., in Herb. C. U." Type, from "fertile soils," Louisiana, seen 

 in the Herbarium of Columbia University at the New York Botanical 

 Garden. 



Corolla violet-pink externally, within paler, with or without 



