Ferns from the Southwest 115 



known as Phegopteris Dryopteris, is a true member of 

 the enormous genus Dryopteris. Christensen, recog- 

 nizing this fact and desiring to avoid employing the 

 double name Dryopteris Dryopteris, renamed it Dryop- 

 teris Linneana in 1905; 1 but in so doing he apparently- 

 overlooked the fact that it had been named Polypodhun 

 disjunctum by Ruprecht, in 1845, 2 and that this 

 name could properly be transferred to Dryopteris. 



* 



Under the so-called American code of nomenclature, 

 however, there is no requirement necessitating the 



exclusion of "double" names. Thus, the recently 

 published name Dryopteris Dryopteris* is technically 

 correct. 



Notholaena Aschenborniana Klotzsch. The spec- 

 imens are from the exposed, rocky southern slopes 

 of the Mule Mountains, Arizona, January 1, 1913, 

 Goodding 1387. They are exactly typical of the species 

 as described from Mexican specimens by Klotzsch 

 in 1847, and again from other Mexican specimens l>y. 

 Liebmann under a second name (Notholaena bipinnata) 

 in 1849. In the United States the species is known 

 only from Texas and Arizona. It is apparently less 

 rare in Mexico; but a part of the Mexican material so 

 referred represents a wholly distinct but closely related 

 species which is as yet undescribed. 



Cheilanthes marginata H.B.K. There are two 

 collections, both from the moist slopes of Ramsey Can- 

 yon, Huachuca Mountains, Arizona, Goodding 760 and 

 1327. This species, which is often known as Pella<a 

 marginata, extends in one form or another from Arizona 

 to Argentina. In the United States it has been found 

 solely in the Huachuca Mountains. Taken in a very 

 broacl sense it may indeed be regarded as a genuinely 



•C. Chr. Index Fil. 275. 1905. 



'Ruprecht, Beitr. Pflanzenk. Buss. Reich 3: 52. 1845- 



•HI. PI. ed. 2. 1: 23. 1913. 



