FLOWERING PLANTS AND FERNS OF ARIZONA 29 



4. PHANEROPHLEBIA 



Coarse ferns of rocky situations, similar in general to Polystichum; 

 fronds rigidly ascending, the blades simply pinnate, with spinulose 

 margins; veins several times branched, free in P. auriculata; sori borne 

 in 2 or several rows on either side of the midvein; indusia orbicular, 

 centrally peltate. 



1. Phanerophlebia auriculata Underw., Torrey Bot. Club Bui. 26: 

 212. pi. 360. 1899. 



Superstition Mountains (Pinal County), Chiricahua Mountains 

 (Cochise County), Sycamore Canyon near Ruby (Santa Cruz County), 

 Baboquivari Mountains (Pima County), Kofa Mountains (Yuma 

 County), 2,000 to 6,000 feet; damp shaded walls of canyons. Western 

 Texas to Arizona and northern Mexico. 



5. DRYOPTERIS. Woodfern 



Mostly woodland ferns of upright habit, the rhizomes various, 

 paleaceous; fronds borne singly or in a crown, mostly pinnate to 

 decompound, glabrous, pubescent, or paleaceous; sori roundish, dorsal, 

 mostly indusiate, the indusium (if present) roundish-reniform, fixed 

 at its sinus. 



Key to the species 



1. Blades subternate, equilateral, the large deltoid basal pinnae nearly equaling 



the terminal portion; indusia wanting 1. D. linnaeana. 



1. Blades oblong-lanceolate to deltoid-ovate; indusia present (2) . 



2. Rhizome slender, creeping; segments of pinnae subentire; veins simple. 



2. D. FEET. 

 2. Rhizome stout, decumbent or erect; segments of pinnae toothed to subpin- 

 nately divided; veins freely forked (3). 

 3. Blades deltoid-ovate, nearly tripinnate at base, noticeably glandular- 



puberulous 5. D. pattjla. 



3. Blades oblong-lanceolate to narrowly ovate (4) . 



4. Pinnae mostly sessile, oblong-lanceolate; veinlets spreading, all ending in 



salient spinelike teeth 3. D. arguta. 



4. Pinnae mostly stalked, deltoid-lanceolate; veinlets oblique, fewer, end- 

 ing in oblique, usually curved, acute teeth 4. D. filix-mas. 



1. Dryopteris linnaeana C. Chr., Ind. Fil. 275. 1905. 



Polypodium dryopteris L., Sp. PL 1093. 1753. 

 Phegopteris dryopteris Fee, Gen. Fil. 243. 1852. 



Bonito Creek, White Mountains (Apache County), on steep shaded 

 slopes (Goodding 1222). Newfoundland and Labrador to Alaska, 

 south to Virginia, Indiana, Kansas, New Mexico, Arizona, and 

 Oregon ; Greenland ; Eurasia. 



2. Dryopteris feei C. Chr., Ind. Fil. 89, 264. 1905. 



Aspidium puberulwn Fee, Mem. Fous:. 10: 40. 1865. Not 

 Gaud., 1827. 



Santa Maria River, southwestern Yavapai County (Hester in L936), 

 Aravaipa Canyon, Graham County {Mohr in L873). Southern Ari- 

 zona and the coastal canyons of southern California; Baja California 

 and Mexico generally. 



