24 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



3. Pellaea atropurpurea (L.) Link, Fil. Hort. Berol. 59. 1841. 

 Pteris atropurpurea L. Sp. PI. 1076. 1753. 



Type locality: " Habitat in Virginia. " 



Range: Ontario and British Columbia to Georgia, Texas, Arizona, and California. 



New Mexico: Black Range; San Luis Mountains; Florida Mountains; Mangas 

 Springs; Organ Mountains; highest point of the Llano Estacado; Queen. Thickets in 

 the lower parts of the mountains, in the Upper Sonoran Zone. 



4. Pellaea pulcheUa (Mart. & Gal.) Fee, Gen. Fil. 129. 1850-52. 



Allosorus pulchellus Mart. & Gal. Nouv. Mem. Acad. Sci. Brux. 15: 47. pi. 10. f. 1. 



1842. 

 Type locality: "Dans la Cordillere au sud de Sola," Mexico. 

 Range: Western Texas to southeastern New Mexico, and adjacent Mexico. 

 New Mexico : Queen ( Wooton) . Crevices of limestone rocks, dry hills, in the Upper 

 Sonoran Zone. 



5. Pellaea ternifolia (Cav.) Link, Fil. Hort. Berol. 59. 1841. 

 Pteris ternifolia Cav. Descr. PI. 266. 1802. 



Type locality: Andes of Peru. 



Range: Western Texas to southern New Mexico and southward. 



New Mexico: Organ Mountain (Wooton). Upper Sonoran Zone. 



This species is rare in New Mexico. We are doubtful of the determination of the 

 Organ Mountain plant, since it is the only specimen collected at this station, although 

 ferns have been collected there frequently and search has been made for the species. 

 Our specimen is possibly a form of P. mucronata. 



Doctor Underwood has reported a specimen from Socorro, collected in 1895 by 

 Plank, and Mr. M. E. Jones reports having obtained it at Silver City in 1903. The 

 species is not uncommon in Chihuahua. 



6. Pellaea mucronata D. C. Eaton in Torr. U. S. & Mex. Bound. Bot. 233. 1859. 



Allosorus mucronatus D. C. Eaton, Amer. Journ. Sci. II. 22: 138. 1856. 



Pellaea wrightiana Hook. Sp. Fil. 2: 142. pi. 115. B. 1858. 



Type locality: "Clefts of rocks in the hills near the bay of San Francisco, 

 California." 



Range: Kansas and Texas to Arizona and California and southward. 



New Mexico: Sandia Mountains; Socorro; Burro Mountains; Santa Rita; Florida 

 Mountains; Dona Ana and Organ mountains. In the drier mountains and foothills, 

 Upper Sonoran Zone. 



This has usually been referred to as P. wrightiana. Wright's 2130 from Santa Rita 

 is the type of P. wrightiana. It is one of the commonest species of the southern part 

 of the State. 



7. ASPLENIUM L. Spleenwort. 



Sori oblong or linear, oblique, separate; indusia straight or very rarely curved, 

 opening toward the midrib when single, toward each other when paired; veins all 

 free. 



KEY TO THE SPECIES. 



Pinnae 2 to 5, linear-cuneate; rachis green :. 1. A.septentrionale. 



Pinnae numerous, 10 to 30 pairs, oblong to oval; rachis brown or 

 black. 

 Plants tall, 10 to 25 cm. high; stipes black; pinnse oblong.. 2. A.resiliens. 

 Plants smaller, 15 cm. high or less; stipes purplish brown; 



pinnee oval 3. A . trichomanes. 



