26 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



10. PHANEROPHLEBIA Presl. 



Rootstcok Bhort and creeping; fronds pinnate, the pinnae 10 to 16, usually auriculate 

 at the base, sen-ate or incised; sori round, borne on the back of forking veins; indusium 

 peltate, opening all around the margin. 



1. Phanerophlebia auriculata Underw. Bull. Torrey Club 26: 212. pi. 359. f 3, 4. 

 1899. 

 Aspidium juglandifolium of authors, in part, not Kunze. 

 Type locality: "Cool damp cliffs, Mapula Mountains, Chihuahua." 

 Range: Mountains of southern Arizona and New Mexico and western Texas. 

 New Mexico: Organ Mountains. Transition Zone. 



11. FILIX Adans. 



Fronds oblong-lanceolate, 10 to 30 cm. long, 2 to 3-pinnatifid, thin, bright green; 

 sori roundish, each borne on the back of a vein; indusium membranous, hoodlike, 

 attached by a broad base on its inner side. 



1. Filix fragilis (L.) Underw. Native Ferns ed. 6. 119. 1900. Brittle fern. 



Poly podium fragile L. Sp. PI. 1091. 1753. 



Cystopteris fragilis Bernh. Journ. Bot. Schrad. 1: 26. 1806. 



Type locality: "Habitat in collibus Europae frigidioris." 



Range: Throughout temperate North America, and in temperate regions around 

 the world. 



New Mexico: Common in all the mountains from the Black Range and White 

 Mountains northward. Transition Zone. 



12. WOODSIA R. Br. 



Sori orbicular, borne on the back of simply forked, free veins; indusium inferior, 

 thin, in ours conspicuous, breaking at the top and splitting into several laciniate 

 lobes. 



Ferns with much the aspect of the fragile fern, but the fronds stiffer and the divi- 

 sions shorter, the indusial characters, also, different. 



KEY TO THE SPECIES. 



Fronds lanceolate; pinnae short, triangular- lanceolate, not glan- 

 dular 1. W. mexicana. 



Fronds broader than lanceolate; pinnae longer, the subdivisions 



broader, glandular-hairy 2. W. pluminerae. 



1. Woodsia mexicana Fee, Mem. Foug. 7: 66. 1854. 



Type locality: "Habitat in Republica Mexicana, prope San Angel." 



Range: Western Texas to Arizona, south into Mexico. 



New Mexico: Tunitcha Mountains; Chama; Winsors Ranch; Rio Pueblo; Sierra 

 Grande; Magdalena Mountains; Mogollon Mountains; Organ Mountains; Gilmores 

 Ranch. Transition Zone. 



2. Woodsia plummerae Lemmon, Bot. Gaz. 7: 6. 1882. 



Woodsia obtusa glandulosa D. C. Eaton & Faxon, Bull. Torrey Club 9: 50. 1882. 

 Type locality: "On the north side of a high peak of the Chirricahua Mountains," 

 Arizona. 



Range: New Mexico and Arizona. 

 New Mexico: Burro Mountains (Rusby). 



