1921] Pennell, — "Veronica" in North and South America 21 



Veronica diffusa Raf., New Fl. Am. 4: 38. 1838. "Native of 

 -, naturalized on the Schuylkill near Philadelphia." 



Re-naming of V. "precox Raf. 



Veronica rotundifolia Sesse & Mocino, Fl. Mex. 5. 1892. "Habi- 

 tat in Eremo P. P. Carmelitarum [Mexico, Mocino & Sesse]." De- 

 scription apparently of the species now considered, although it may be 

 that I have transposed the application of this name and V. crenulata 

 S. & M. Not V. rotundifolia Ruiz & Pavon, 1798. 



Fields and roadsides, occasional, or westward locally common, 

 through Temperate North America, from Newfoundland and southern 

 Alaska, south to Georgia, Texas and California; Mexico; Jamaica; 

 Colombia; Chile. Introduced from southern Eurasia. 



Our plant has also been known as Veronica Tournefortii C. C. 

 Gmel., V. Buxbaumii Tenore, and V. byzantina (Smith) B.S.P. 

 The two last are subsequent names, dating as species from 1811 and 

 1888 respectively. The original description of V. Tournefortii C. 

 C. Gmel., Fl. Bad. 1: 39. 1805, was composite, based upon a plant 

 escaped from the botanic garden to fields near Carlsruhe, Baden, 

 and upon a specimen brought by Tournefort from the Levant, which 

 had recently been described as V. filiformis Smith (in Trans. Linn. Soc. 

 1: 195. 1791.). The former element was probably our species, but 

 the name Tournefortii should be applied to Tournefort's plant, and 

 this is the basis of V. filiformis, a distinct though related species. 

 Moreover the name was antedated by Veronica Tournefortii F. W. 

 Schmidt, Fl. Boem. 7. 1793. (Description not seen, but the publica- 

 tion of this name verified by Lacaita in his discussion of this whole 

 problem in Jour. Bot. 55: 271-276. 1917.) 



16. Veronica biloba L. 



Veronica biloba L., Mant. 172. 1771. "Habitat inter Cappado- 

 ciae segetes. D. Schreber. " 



Collected at Yonkers, New York, by E. P. Bicknell; also at 

 Logan, Utah, by C. P. Smith, 1604 and 2167, and by him com- 

 mented upon (under the name of V. campylopoda Boiss.) and illu- 

 strated in comparison with V. persica Poir., in Muhlenbergia 6: 61. 

 1910. 



Veronica campylopoda Boiss., Diagn. PI. Nov. 4: 80. 1844, dis- 

 tinguished from V. biloba as having its leaves and sepals narrower, 

 the former hardly denticulate to entire above, its pedicels recurved, 

 its seeds strongly rugulose and its style longer, half the length of the 

 capsule, seems not to be definitely separable by any of these charac- 



