1919.] NATURAL SCIENCES OF PHILADELPHIA. 253 



Penslemon laevigatus 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 laevigatus Ait. Type of genus Bartramia Salisb. 



Pensteuon pentstemon (L.) Macm., Bull. Torr. Bot. Club 19: 1.5. 1892. 



Meadows, river-banks and edges of forest, l(j)am or clay, frequent 

 or common through the Piedmont, both east and west of the moun- 

 tains, and through the lower valleys of the southern Appalachians: 

 descending along river-banks slightly into the Coastal Plain. Ranges 

 from Virginia to northern Florida and Louisiana, and inland prob- 

 ably to Illinois; perhaps introduced westward. 



Flowering from mid-Ma}^ to mid-June, fruiting in July and August. 

 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. 



Pennell (Georgia)— 9787. (Alabama)— 9746, 9756, 9780. 



5. Penstemon calycosus Small. 



Penstemon calycosus Small, Bull. Torr. Bot. Club 2.5: 470. 1898. "Nash- 

 ville, Tennessee." This refers to a note in Bull. Torr. Bot. Club 21: 304. 

 1894, reporting the occurrence of "Penstemon Stnallii" and stating: 

 "Mr. Bicknell has lately discovered this ... at Nashville, Ten- 

 nessee, He remarks that it grows plentifully on the bluffs of the Cum- 

 berland River about that city." Type seen in Herb. Columbia University 

 at the New York Botanical Garden. 



Rocky places, limestone ledges, in forest, Tennessee Basin and 

 lower slopes of the Cumberland IVIountains, central and eastern 

 Tennessee, and northern Alabama. Ranges northward to Indiana 

 and Illinois. 



Flowering from mid-May to mid-June, fruiting in July. Corolla 

 externally violet-purple (redder than in P. pentstemon), deeper 

 posteriorly, fainter to white on anterior side; within nearly white 

 within throat, on lobes faintly violet-purple, and with a few ob- 

 scurely violet-purple lines within throat on anterior side. Sterile 

 filament with yellowish hairs. 



Pennell (Alabama)— 9772. 



6. Penstemon smallii Heller. 



Penstemon smallii Heller, Bull. Torr. Bot. Club 21: 25. 1894. "Collected 

 by the writer on Blowing Rock Mountain, Caldwell County, N[orthl 

 C[arolina], July 21, 1890, at an elevation of 4000 feet. .... Early 

 in June, 1891, the locality was again visited in company with Mr. John K. 

 Small." Type, Blowing Rock Mountain, Watauga Co., collected in 

 flower June 10-20, Small & Heller 451, seen in Herb. Columbia University 

 at the New York Botanical Garden. Isotype in Herb. Academy of 

 Natural Sciences of Philadelphia. 



