1907] Hall. Compositae of Southern California. 173 



One to 3 dm. high, at length loosely branched and diffuse: 

 herbage somewhat succulent, villous-tomentose when young, com- 

 monly glabrate: leaves narrowly oblong to broadly ligulate. 

 laciniate-pinnatifid (especially above the middle) or the upper 

 entire; the larger sometimes 5 to 10 cm. long and with the con- 

 spicuously nerved undivided portion 1 cm. broad : involucral 

 bracts and oblong exserted rays 10 to 13 : pappus (rarely want- 

 ing) of 2 to 4 awns and about 6 truncate-fimbriate intervening 

 paleae. 



An inhabitant of low wet places : Santa Barbara, ace. to Gray ; 

 Tulare, Davy; north to San Francisco Bay. 



4. B. aristata (Nutt.) Hall, comb. nov. Ptilomeris aristata 

 Nutt, Trans. Am. Philos. Soc. ser. 2, vii. 382 (1841). P. coron- 

 aria Nutt., 1. c. Baeria coronaria Gray, Proc. Am. Acad. xix. 23 

 (1883). 



Stem simple to diffusely much branched, 5 to 30 cm. high: 

 herbage minutely glandular-pubescent throughout: leaves most- 

 ly pinnately parted into long linear-filiform divisions : involucre 

 4 or 5 mm. high; bracts deciduous with ray-achenes; midnerve 

 prominent: ray-flowers usually about 12 (8 to 15) ; ligules 4 to 

 10 mm. long: pappus of 8 to 12 lanceolate or oblong paleae in 

 the typical form, some or all of them tapering into awns about 

 equalling the corolla. 



Very common at San Diego (Pur pus, Univ. Calif, no. 30414 ; 

 etc.), thence to Riverside (and Port Ballona, Los Angeles Co., 

 ace. to Abrams). First described as Ptilomeris aristata Nutt., 

 from specimens in which all of the paleae were awned in disk- 

 flowers; two of them awned, the remainder muticous, in ray- 

 flowers, and the receptacle naked. In P. coronaria Nutt. none of 

 the paleae in the ray-flowers are awned and the receptacle is 

 densely villous. That these characters are much too variable, 

 even in individual plants, to be of any value, is very evident from 

 the abundant material now at hand. 



f. mutica (Nutt.) Hall, comb. nov. Ptilomeris mutica Nutt., 

 Trans. Am. Philos. Soc. ser. 2, vii. 382 (1841). Baeria mutica 

 Gray, Proc. Am. Acad. xix. 23 (1883). Pappus of oblong 

 paleae, the obtuse or truncate summit erose. Likewise common 

 at San Diego (Setchell, Univ. Calif, no. 53902; etc.), thence to 



