170 . S. B. PARISH 



Pteris aquilina Linn. var. lanuginosa Hook. Fl. Bor. Am. 2: 196. Bracken 



A low form prevails as a ground cover in the open pine forest of the Lower 

 Transition Zone, and a more luxuriant form is frequent about springy- 

 places and on stream banks in the Lower Chaparral Zone. 

 Cheilanthes Fendleri Hook. Sp. Fil. 2: 103, t. 107 B. 



Frequent in crevices of rocks in the Upper Chaparral and Transition Zones, 

 and occasional in the Pinon Zone. 

 Pellaea andromedaefolia Fee, Gen. Fil. 129. 



Frequent on shady and stony hillsides in the Lower Chaparral Zone. 

 Pellaea ornithopus Hook. Sp. Fil. 2: 145 A. 



Abundant, usually in the shelter of shrubs or stones and in clay soil, in 

 the Lower Chaparral Zone. 

 Pellaea wrightiana Hook. var. californica Lemmon Ferns Pac. Coast 10. 



Occasional in exposed rock crevices, or in rocky soil, in the Canadian Zone. 

 Cryptogramma aciirostichoides R. Br. App. Frankl. Journ. 767. 



Infrequent in the Canadian and Hudsonian Zones. Big Meadows; Dollar 

 Lake. 

 Woodwardia radicans Smith, Mem. Acad. Turin, 6: 412. 



Frequent about springs and on shaded stream banks in the Lower Chaparral 

 Zone. 

 Asplenium filix-foemina Bernh. ; Schrad. Neues Journ. Bot. 1: 26. Lady Fern 

 Occasional about springs and streams and in bogs in the Transition Zone. 

 Dryopteris filix-mas Schott. Gen. Fil. 



Among rocks, Upper Holcomb Valley, a single collection, and the only 

 one reported from the state. • 



Polystichum muniium Presl. Tent. Pterid. 83. 



Common on shaded stony canon sides in the Chaparral Zone. 

 Polystichum scopulinum Maxon, Fern Bull. 8: 29. 



Locally abundant in rock crevices at the Hudsonian island in Snow Canon. 

 Aspidium rigidum Swartz var. argiUum Eaton, Wheeler's Surv. 6: 333. 



Common on shaded and stony canon slopes in the Chaparral Zone. 

 Cystopte.ris fragilis Bernh.; Schrad. Neues Journ. Bot. 1: 26. 



Frequent in damp crevices and on stony stream banks in the Transition 

 Zone. 

 Woodsia oregana Eaton, Canad. Natur. 1:91. 



Rare on rocky cliffs in the Canadian Zone. 



EQUISETACEAE 



Equiselum arvense Linn. Sp. PL 1061. 



Occasional, and sometimes locally abundant, in wet soils, in the Chaparral, 

 Transition and Canadian Zones. 

 Equisetum Funstoni A. A. Eaton, Fern Bull. 11: 10. 



Rare in sandy soil in canons of the Lower Chaparral Zone. 

 Equiselum robusium R. Br.; Engelm. Am. Journ. Sci. 46: 88. 



Infrequent in mucky soil in the Lower Chaparral Zone. 



