!907] Hall. Compositor of Southern California. 171 



Var. gracilis f. aristosa (Gray) Hall, comb. nov. B. gracilis 

 aristosa Gray, Proc. Am. Acad. xix. 21 (1883). B. aristosa 

 Howell, Fl. N. W. Am. 354 (1900). Disk-pappus of 3 or 4 awns 

 very gradually and slightly widened downward. 



Var. gracilis f. tenerrima (DC.) Hall, comb. nov. Burrielia 

 tenerrima DC., Prodr. v. 664 (1836) ? B. gracilis tenerrima 

 Gray, Syn. FL i. pt. 2, 326 (1884). Disk-pappus of f. aristosa 

 but awns often fewer : stems low and slender, often simple : rays 

 and bracts only 5 or 6 each. A starved form of sterile soil. 

 Mr. Parish has collected in the San Bernardino Mts. some speci- 

 mens (no. 235 as represented at Univ. Calif. Herb.) of this form 

 in which the receptacle is paleaceous, each achene being sub- 

 tended by a cuneate palea of its own length. 



Var. gracilis f. paleacea (Gray) Hall, comb. nov. B. gracilis 

 paleacea Gray, Proc. Am. Acad. xix. 21 (1883). B. Clevelandi 

 Gray, 1. c. 22. Disk-pappus of 2 to 4 ovate or deltoid paleae more 

 or less abruptly contracted to a slender awn. B. Clevelandi was 

 described as glabrous except for some fine deciduous woolliness. 

 the style-tips with a conical or subulate appendage, and the 

 pappus of only 2 paleae. Mrs. Brandegee, after having examined 

 the type, says that she is unable to detect any difference between 

 the pubescence or style-tips of B. Clevelandi and of B. gracilis, 

 and that in the type of the former the pappus-paleae are some- 

 times 3 in number. Further evidence against B. Clevelandi as a 

 species is the following : Specimens from Ocean -Beach, near 

 San Diego, Apr. 21, 1894, Brandegee, have all the characters of 

 B. c. gracilis except that the pappus-paleae are only 2 or 3 in 

 number and with the shape assigned to those of B. Clevelandi; 

 specimens from Rialto, San Bernardino Co., Hall, no. 2941, dup- 

 licate the pappus characters of B. Clevelandi in some flowers, 

 other flowers from the same plant have 4 awned paleae, and still 

 others have 2 paleae and 2 intermediate squamellae, etc. The 

 style-tips and pubescence of my. no. 2941 are as in the common 

 form of B. c. gracilis. 



Var. gracilis f. Clementina (Gray) Hall, comb. nov. B. 

 Palmeri Clementina Gray, Syn. Fl. i. pt. 2, 452 (1886). Paleae 

 of both ray and disk-flowers mostly 5, ovate, firm, attenuate into 

 a stout awn, sparingly erose-laciniate or only denticulate : plants 



