CONTRIBUTIONS TO WESTERN BOTANY NO. 16 



Also No. 120549. Pomona College herbarium, got by me at Guayanopa 

 Canon, Chihuahua, September 24, 1903, at 3,600 foot altitude, m 

 Tropical life zone on slopes. At first sight this fern seems to be 

 Cheilanthes tomentoa or Fendleri, and grows with them but the 

 indusium is entirely different and fills the whole of the pinnule, 

 giving the young fronds a silvery appearance. 



U-iu-ra. Cheilanthes Jonesii Maxon. An examination 

 of young material shows a distinct indusium, and this would 

 place it in Cheilanthes. But to me the plant is as good a species of 

 Pellaea as Notholaena. I do not know N. tenera and so do not know 

 if Maxon's species is a good one or not. The species of ferns of the / 

 deserts and of southern California are in a bad state of confusion. 



An evimiir'tio-i of \;,nmH Material convinces me that Maxon's Cheilan- 

 thes siliquosa is not a good species; 

 has intergrades. The same is true 

 separated from Fendlei " 



Cheilanthes \ is a good Pellaea as Baker put 



ago. In the same class belong several Mexican species of Cheilan- 

 thes which are too near to Pellaea. 



( "heilanthes gracillima was got by Baker at St. Croix Falls, Wisconsin, 

 July 5, 1900, and is No. 23324, Pomona College Herbarium. 



fauieum colonum. No. 24691. Ramsey Canon, Huachuca mountains, 

 Arizona. September 30, 1929. No. 24692. Boboquivori mountains, 

 Arizona. September 19, 1929. Waste places. 



i'anicum hirticaule. No. 24693. East of Desert Center, California. Sep- 

 tember 16, 1929. Common along with Pectis. 



Panicum Hallii. No. 24694. Baboquivori mountains, Arizona, September 

 23, 1929. 



Panicum bulbosum var. sciaphilum. No. 24695. Ramsey Canon, Hua- 

 chuca mountain-, Arizona. September 30, 1929. On hillsides, very 

 common, and in the valley below. 



Setaria caudata. No. 24696. Baboquivori mountains, Arizona. Sep- 

 tember 20, 1929. Perennial. 



Setaria caudata var. pauciilora (Vassev) as Chaetochloa. No. 24697. Ajo, 

 Arizona. September 18, 1929. No. 24698. Baboquivori mountains, 



Arizona. September 19, 1929. Common. 



Setaria glauca. No. 24699. Ramsey Canon, Huachuca mountains, Ari- 

 zona. September 30, 1929. In waste places. 



Panicum sanguinale L. No. 24700. Ramsey Canon, Huachuca moun- 

 tains, Arizona. September 29, 1929. Annual. 

 Fern Notes Additional 



Agropyron Arizonicum Scr. & Merr. No. 24701. Ramsey Canon, Hua- 

 :ona, at 6,000 feet altitude, among the live oaks. 

 30, 1929. This plant is rather unique. It is 4-6 feet 

 erect but very slender, and with wand-like linear spikes and 

 eaves. It is not stolon if erous but grows in small tufts of a 

 and in open places. The glaucousness varies greatly, 



