December 30, 1907 335 



SIONKCI()IVA(JKAE fam. nov. 

 Mostly perennial herbs, some shrubby, juice watery, some 

 bitter and aromatic: leaves mostly alternate, entire or merely 

 toothed, sometimes dissected: involucres mostly cylindrical, the 

 bracts herbaceous, not scarious, in one or two series, sometimes 

 with short accessory ones at base: receptacle naked: anthers not 

 caudate at base but sometimes sagittate: style branches of per- 

 fect flowers obtuse or truncate, or sometimes penicillate: pappus 

 of numerous capillary bristles, commonly fine and scabrous but 

 sometimes coarser and barbellulate, occasionally caducous. A 

 family made up of the genera comprising the tribe Scnecionid- 

 eae or Senecioneae of the family called Compositae. 



Arnica CORDIFOU A Hook. Fl. Bor. Am. 1: 331. 1833. 



No. 8612, collected May 31, on Mt. Hamilton, Santa Claia 

 county, on the ridge between the observatory and Copernicus 

 Peak, elevation 4225 feet, in loose gravelly ground under bushes. 

 These plants are rayless, and no doubt are identical with the 

 plant reported from here in the Botany of California, collected 

 by Brewer. I do not believe my plant is of this species, but 

 refer it here temporarily. 



Senecio aronic&ides DC. Prodr. 6: 426. 1837. 



No. 8448, collected April 20, in San Mateo county near 

 Lake Merced, elevation 100 feet, on damp northerly slopes in a 

 rank growth of other plants. This seems to be the typical form 

 with unequally dentate leaves. Douglas collected the type, per- 

 haps in this same region. 



Senecio eurycephalus T. & G. Mem. Am. Acad. U. 4: 109. 

 1849. 



Senecio Breroeri Davy, Erythea 3: 116. 1895. 



No 8565, collected May 23, about two miles beyond San 

 Mateo, San Mateo county, elevation 100 feet, on the Half Moon 

 Bay road, growing in shade on a wooded northerly slope in rich 

 loose ground. Fremont collected the original in this State, but 

 the station not g-iven. 



