174 University of California Publications in Botany. [VOL. 3 



San Jacinto, Beaumont, and Redondo. Specimens gathered by 

 myself near Riverside, under numbers 3714 and 3833, belong 

 partly to this form, partly to typical B. aristata, while some ex- 

 hibit the characters of both. The paleae of disk-flowers are 

 sometimes all truncate and awnless, or from 1 to 4 of them may 

 be awned, all combinations occurring in a single head. 



f. anthemoides (Nutt.) Hall, comb. nov. Ptilomeris anthem- 

 oides Nutt., Trans. Am. Philos. Soc. ser. 2, vii. 382 (1841). 

 Baeria anthemoides Gray, Syn. Fl. i. pt. 2, 328 (1884). Pappus 

 none : receptacle usually scrobiculate. Known only from south- 

 western San Diego Co. (Hall. no. 3950, etc.) 



Var. affinis (Nutt.) Hall, comb. nov. Ptilomeris affinis Nutt.. 

 PL Gamb. 173 (1848). Baeria affinis Gray, Proc. Am. Acad. xix. 

 23 (1874). Stems slender: involucre 3 or 4 mm. high: ray- 

 flowers 6 to 8 ; ligules 4 mm. or less long : pappus, in the typical 

 form, of 6 to 10 oblong or lanceolate paleae as long as the corolla- 

 tube, the margins erose or laciniate, some or all of them continued 

 into awns about equalling the corolla, or in the ray all blunt 

 and awnless: herbage (always?) sweet-scented. This form has 

 been collected near Los Angeles and at North Pomona, Clare- 

 mont, Cajon Pass, and San Bernardino. It differs from typical 

 B. aristata only in being generally smaller and more slender, 

 and in having smaller heads with less numerous rays. It has a 

 pappus form (f. truncata) corresponding to f. mutica of B. 

 anthemoides. 



Var. affinis f. truncata Hall, nom. nov. Ptilomeris tenella 

 Nutt., PL Gamb. 173 (1848). Baeria tenella Gray, Proc. Am. 

 Acad. xix. 23 (1883). Not Dichaeta tenella Nutt., Trans. Am. 

 Philos. Soc. ser. 2, vii. 383 (1841), which is Baeria tenella Greene. 

 FL Fr. 439 (1897) and Jepson, FL W. Mid. Calif. 520 (1901). 

 Pappus of 6 to 10 oblong or cuneate paleae mostly shorter than 

 the corolla-tube, the truncate summit erose or denticulate. 

 Piru, Ventura Co., Hall, no. 3122; North Pomona, Braunton, no. 

 254, in part; Claremont, Chandler; etc. Often found with the 

 typical form of var. affinis, from which it differs only in the 

 pappus, and the two forms are not infrequently mounted in her- 

 baria under a single label. Field observations on the odor of 

 the herbage are desirable. 



