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BOTANICAL GAZETTE 



intergrading more or less with the typical form. Extremes in 

 habit so striking, however, are often well worthy varietal rank. 

 Such is the case with 



50. Lappula cupulata (Gray) Rydb. var. foliosa (A. Nels.), 

 n. comb. — L. foliosa A. Nels. in Coulter and Nelson Rocky 

 Mountain Botany 413. 1909. 



Specimens examined: Idaho: dry stony plains, Castleford, Twin Falls 

 County, June 26, 191 2, Nelson and Macbrtde (1709); Snake River Plains, 1893, 

 Edward Palmer (280); dry river bank, St. Anthony, July 5, 1901, Merrill and 

 Wilcox (839); Wyoming: waste ground, Bench, Uinta County, June 25, 1902, 

 Leslie N. Goodding (1188); gravelly slopes, Kemmerer, Uinta County, June 1, 

 1907, Avert Nelson (9015). 



6. Lappula texana (Scheele) Britton Mem. Torr. Bot. Club 

 5:27. 1894. — L. collina Greene, Pitt. 4 : 96. 1899. — It seems strange 

 that this strong species has been misunderstood for so long. Ever 

 since Gray reduced it to his totally different var. cupulata, there is 

 scarcely an annual Lappula that at some time or other has not 

 masqueraded under the name. Small's Fl. S.E.U.S. 997. 1913 

 contains the most nearly correct description that has come to 

 notice. As indicated in the key, the species and its variations are 

 separable at a glance from L. cupulata by the different fruit. The 

 dissimilarity of nutlets is a striking character that is absolutely 

 valid for the typical form. The following specimens (many from 

 San Antonio, the type locality) indicate a range far removed from 

 L. cupulata. Where the species meet in one form or another in the 

 central Rocky Mountains, the fruit characters remain just as pro- 

 nounced. 



Specimens examined: Texas: San Antonio, April 17, 1894, A. A. Heller 

 (1585); gravelly plain, San Antonio, April 1853, George Thurber; San Antonio, 

 G. Jermy (225); San Antonio, 1841, F. Lindheimer (477); light sandy soils, 

 Brown County, April, /. Reverchon (2117a); Comaniche, May 10, 1900, H. 

 Eggert; Abilene, May 20, 1902, 5. M. Tracy (7833); El Paso, March 1851, 

 George Thurber (1 53); New Mexico: 1851, C.Wright (1573). 



Northward the plant gradually assumes a habit entirely anal- 

 ogous to L. cupulata (Gray) Rydb. var. foliosa (A. Nels.) Nels. 

 and Macbr., which, becoming extreme in Colorado and Wyoming, 

 may be known as 



