1907] Hall. Compositae of Southern California. 127 



inner bracts lanceolate, acute, 1 to 1.5 cm. long : rays 1.5 to 3 cm. 

 long, 3-toothed at apex or entire. 



Principally in the Upper Sonoran Zone : Mono Creek, Santa 

 Barbara Co., Hall, no. 7797 ; near Manzana, Antelope Valley, Los 

 Angeles Co., Davy; summit of Tejon Pass, Los Angeles Co.; 

 Tehachapi Valley, Kern Co. ; north to British Columbia. 



It has been suggested 26 that the California plants commonly 

 referred to this species should be separated from the "true" B. 

 deltoidea of Oregon and Washington as a distinct geographical 

 variety or species, because of their scabrous leaves and smooth or 

 merely hirsute involucres. These variations, however, are not 

 strictly geographic, some specimens from Southern California 

 (Davy, no. 2185, etc.) now at hand exhibiting tomentose invo- 

 lucres and scarcely scabrous leaves while some Oregon specimens 

 (Cusic~k, no. 1679) have scabrous involucres and foliage; and 

 perhaps this latter form is typical B. deltoidea, which Nuttall 

 described as "wholly green." 



45. WYETHIA Nutt. 



Perennial herbs with very stout roots crowned by a short 

 caudex which bears a tuft of ample mostly entire leaves. Invo- 

 lucre hemispheric or camp'anulate, its bracts in 2 or 3 series, the 

 outermost often foliaceous and much enlarged, the innermost 

 small and bract-like. Receptacle flat or nearly so ; its bracts rigid, 

 linear or lanceolate, either flattish or partially folded around the 

 achenes. Flowers yellow (varying to white in one species), fertile 

 in both ray and disk, the latter perfect. Branches of the style 

 in perfect flowers produced into subulate-filiform hispid append- 

 ages. Achenes prismatic-quadrangular or in the ray triangular. 

 Pappus firm and persistent, consisting of a crown of unequal 

 scales, or with rigid awns at the angles. 



1. W. ovata T. & G., Emory's Kept. 143 (1848) ; Abrams, 

 Bull. Torr. Club xxxii. 541 (1905). Not W. ovata Gray, Proc. 

 Am. Acad. vii. 357 (1867), Syn. Fl. i. pt. 2, 268 (1884), etc. W. 

 coriacea Gray, Proc. Am. Acad. xi. 77 (1876) ; Hall, Univ. Calif. 

 Pub. Botany, i. 131 (1902). 



26Coville, Contr. U. S. Nat. Herb. iv. 130 (1893). 



