166 - PITTONIA. 



tomentose "beneath: inflorescence loosely corymbose at tlie 

 ends of the erect branches: heads 3 or 4 lines high and, with 

 the expanded rays, 1 inch broad ; involucral bracts 6 or 8, 

 coriaceous, ovate ; rays 6 or 8: achenes with a few short his- 

 pidulous hairs ; palese of the pappus in 2 unequal sets, those 

 of the inner circle much longer. 



Mountains south of Liyermore, California, May, 1891, W. 

 L. Jepson. A strikingly well-marked species, combining the 

 habit of E. co7iferUflorvm and the scattered large heads of 



E. ccespitosum. 



r 



Senecio hespeeius. Low, subacaulescent, apparently ces- 

 pitose, 6 to 10 inches high, leafy only at the decumbent base, 

 sparingly floccose-tomeutose when young, in age nearly gla- 

 brous : leaves rather firm, from round-oval to oblong and 

 oblong-lanceolate, -I to 1 inch long, taporing to a short or 

 long petiole, almost entire, or repandly or crenately feW' 

 toothed : scapose stem monoceph along, usually with one or 

 more small sessile lanceolate bracts : head | inch high, with 

 the expanded rays 1 inch broad ; involucre campanulate, the 

 bracts linear, outer calyculate ones few or none: rays 10 or 

 12, deep yellow: style-tips slightly penicillate. 



Mountains of southern Oregon, Thomas HowelL Species 

 recalling by its foliage S. rapifoltus of Montana and Wyo- 

 ming ; intermediate between that and S. Greenei of middle 

 California. 



Senecio Eawsonianus. Perennial, leafy at base, robust, 

 2 or 3 feet liigli, somewhat canescent witli scattered short 

 woolly hairs: leaves 6 or 8 inches long, ovate to lanceolate, 

 acute, sinuately or luciniately tootlied, or the upper repaiid- 

 dentate: heads very numerous, in a somewliat fastigiate crm- 

 pound corymb ; involucres nearly cylindrical, 4 lines high, 

 the bracts oblong-linear, abruptly acuminate, the calyculate 

 ones few and short: rays none: tubular corollas salmon-color, 

 soon concealed by tlie accrescent and copious white pappus. 



Forests of Fresno County, California, at middle elevations 



