163 



wood was unwilling to raise it to a specific rank in 1897. 

 Sonoran. 



Notholaena ferruginea Desv. A fairly abundant species. 

 Fronds change noticeably in appearance with age, becoming 

 glabrous and brownish-green on the upper surface, while the 

 granular coating of the under surface changes from a cream- 

 color to a ferruginous shade. Sonoran. 



Notholaena Hookeri D. C. Eaton. The commonest fern of the 

 range and at the same time one of the prettiest. It forms large 

 tufts on the drier and warmer hillsides, protecting itself from 

 desiccation by closing the five lobes of the frond upward, much 

 as one. might close the hand, thus exposing the yellow, mealy, 

 lower surface. Sonoran. 



Notholaena dealbata (Pursh) Kunze. One of the most inter- 

 esting and rarest of the ferns of the region, with its little black - 

 stiped fronds of numerous small bluish pinnules, which are 

 covered with a white mealy powder on the under surface. 

 Collected thus far only on the steep cliffs of the limestone 

 outlier above mentioned. Sonoran. 



Cheilanthes Feei Moore. Growing in small clusters in crevices 

 of vertical or overhanging rocks, both calcareous and silicious. 

 Not uncommon in the mountains of the Territory though 

 never abundant in any locality. Sonoran. 



Cheilanthes tomentosa Link. Forming bunches at the bases 

 of and partially under loose rocks in dry silicious soil and but 

 partly protected from the sun. Frequently associated with 

 Notholaena simiata. Sonoran. 



C. tomentosa Eatoni Baker. Associated with the species from 

 which it is hardly distinguishable. Sonoran. 



Cheilanthes Fendleri Hook. One of the daintiest ferns of the 

 region. Small and with finely dissected though stiffish fronds. 

 Common in the mountains of the Territory, though never very 

 abundant in any locality. Sonoran. 



Cheilanthes Lindheimeri Hook. A characteristic fern, form- 

 ing long, matted strings of vegetation in crevices in the large 

 granite boulders which fill one of the canons. Not common. 

 Sonoran. 



