20 CONTEIBUTIONS FEOM THE NATIONAL HEKBAKIUM. 



Plants email, 10 to 15 cm. high; pinn£e rotund, entire 



or 2 or 3-toothed 2a. N. sinuata inte- 



gerrima. 

 Plants larger, 20 to 30 cm. high; pinnae oblong, sinuate, 



several-toothed 2. N. sinuata. 



Fronds farinose beneath, neither hairy nor scaly. 



Lower surface of fronds bright yellow; fronds pentagonal in 



outline, barely bipinnate 3. N.hooheri. 



Lower surface of fronds white; fronds deltoid -ovate in out- 

 line, tripinnate or quadripinnate. 

 Rachises nearly straight; pinnules opposite, mostly sim- 

 ple, the terminal ones rarely lobed 4. N. dealbata. 



Rachises and all their branches flexuous; pinnules alter- 

 nate, the ultimate ones frequently 3-lobed 5. N. fendleri. 



1. Notholaena bonariensis (Willd.) C. Chr. Ind. Fil. 6. 1905. 

 Acrostichum honariense Willd. Sp. PI. 5: 114. 1810. 



Cincinalis ferruginea Desv. Ges. Naturf. Freund. Berlin Mag. 5: 311. 1811. 

 Notholaena ferruginea Hook. Journ. de Bot. 1: 92. 1813. 

 Type locality: "Bonaria" (Argentina). 



Range: Arizona and western Texas to Central and South America. 

 New Mexico: Organ and Dona Ana mountains. Dry hills, among rocks, in the 

 Upper Sonoran Zone. 



2. Notholaena sinuata (Swartz) Kaulf. Enum. Fil. 135. 1824. 

 Acrostichum sinuatum Swartz, Syn. Fil. 14. 1806. 



Type locality: Peru. 



Range: Arizona and western Texas to Mexico and South America. 



New Mexico: Black Range; San Luis, Big Hatchet, Carrizalillo, and Bear moun- 

 tains; Animas Valley; Tortugas Mountain; Florida, Organ, and Guadalupe moun- 

 tains. Dry hills, in the Upper Sonoran Zone. 



Reported from Las Lagunitas near Las Vegas by T. S. Brandegee. 



2a. Notholaena sinuata integerrinaa Hook. Sp. Fil. 5: 108. 1864. 



Type locality: Mexico. 



Range: Arizona and western Texas to Mexico. 



New Mexico: Black Range; Big Hatchet Mountains; Organ Mountains; Tortugas 

 Mountain; White Mountains; Queen; Lakewood. Dry hills, in the Lower and Upper 

 Sonoran zones. 



3. Notholaena hookeri D. C. Eaton in Wheeler, Rep. U. S. Surv. 100th Merid. 6: 



308. pi. 30. 1879. 



Type locality: Western Texas. 



Range: Arizona and western Texas to Mexico. 



New Mexico: Socorro Mountain; Burro Mountains; Kingston; San Luis Moun- 

 tains; Tres Hermanas; Florida Mountains; Dona Ana Mountains; Organ Mountains. 

 Dry hills, in the Upper Sonoran Zone. 



Also reported from Las Lagunitas, near Las Vegas, by T. S. Brandegee. 



4. Notholaena dealbata (Pursh) Kunze, Amer. Journ. Sci. II. 6: 82. 1848. 

 Cheilanthes dealbata Pursh, Fl. Amer. Sept. 671. 1814. 



Notholaena nivea dealbata Davenp. Cat. Davenp. Herb. Suppl. 44. 1883. 



Type locality: ' 'On rocks on the banks of the Missouri. " 



Range: Nebraska and Missouri to New Mexico and Arizona and southward. 



New Mexico: Burro Mountains; Big Hatchet Mountains; Lookout Mines; Tor- 

 tugas Mountain; V Pasture. On limestone cliffs, dry hills, in the Lower and Upper 

 Sonoran zones. 



