306 MISC. PUBLICATION 423, U. S. DEPT. OF AGRICULTURE 



1. Cerastium vulgatum L., Sp. PL ed. 2, 627. 1762. 



Greer, Apache County {Fulton 8214), Lakeside, Navajo County 

 (Harrison 5492), 6,200 to 8,200 feet, June to September. Widely 

 distributed in the United States; naturalized from Europe. 



2. Cerastium beeringianumSchlecht. and Cham., Linnaeal: 62. 1826. 

 San Francisco Peaks (Coconino County), 11,000 to 12,000 feet, 



July and August. Quebec to Alaska, south to New Mexico and 

 northern Arizona. 



3. Cerastium arvense L., Sp. PL 438. 1753. 



Apache County to Coconino County, 7,000 to 9,000 feet, June and 

 July. Labrador to Alaska, south to Georgia, New Mexico, northern 

 Arizona, and California; Europe. 



Flowers showy for the genus, with pure-white petals. The form 

 of this polymorphic species occurring in Arizona is probably C. 

 scopulorum Greene. 



4. Cerastium texanum Britton, Torrey Bot. Club Bui. 15: 97. 1888. 

 Graham, Gila, Maricopa, Cochise, Santa Cruz, and Pima Counties, 



1,500 to 6,000 feet, moist, partly shaded places, March and April, also 

 August and September. Central Texas and southern Arizona. 



5. Cerastium brachypodum (Engelm.) Kobinson in Britton, Torrey 



Bot. Club Mem. 5: 150. 1894. 



Cerastium nutans var. brachypodum Engelm. in A. Gray, Man. 

 ed. 5, 94. 1867. 



Apache, Navajo, Coconino, Greenlee, and Cochise Counties, 7,000 

 to 9,500 feet, May to July. South Dakota to Alberta, south to 

 Virginia, Missouri, Arizona, Oregon, and northern Mexico. 



Specimens collected in the Huachuca Mountains {Goodding 1296) 

 are apparently perennial. 



6. Cerastium nutans Raf., Prec. Somiolog. 36. 1814. 



Cerastium longipedunculatum MuhL, Cat. 46. 1813. (Nom. 

 nud. ?) 



Apache and Gila Counties to Cochise and Pima Counties, 7,500 to 

 9,500 feet, July to October. Nova Scotia to British Columbia, south 

 to North Carolina, Arizona, and nearly throughout Mexico. 



Both the typical form, viscid-villous with spreading hairs, and var. 

 obtectum Kearney and Peebles (C. sericeum S. Wats, not Pourr.) 

 occur in Arizona. The latter has the stems and leaves, at least near 

 the base of the plant, sericeous with long nonglandular hairs. Many 

 Arizona specimens are intermediate in character of the pubescence. 

 The type of C. sericeum was obtained in the Huachuca Mountains. 



3. SAGINA. Pearlwort 



Plants herbaceous, annual or perennial, small and inconspicuous; 

 stems slender, diffuse, matted; leaves narrowty linear; petals 4 or 5 

 and entire, or wanting; capsule finally dehiscent to the base. 



The identification of the Arizona specimens is uncertain. 



