PLANTS FROM BAJA CALIFORNIA. 173 



Helianthus niveus (Bentli.) Encelia nivea Benth. Bot. 

 Sulph. Helianthus dealbatas Gray, Syn. Fl. i, 28 & Supp. 

 450. Such species as this tend to reconcile botanists to 

 Baillon's sometimes rather sweeping reductions of genera. 

 In some of the specimens in the herbarium of the California 

 Academy of Sciences, which were collected at Ensenada 

 and San Quintin, the pappus consists sometimes of one 

 slender awn, sometimes of two thin pale^e. In these speci- 

 mens from Santa Margarita Island, the akenes are longer, 

 more silky-pubescent, and the very deciduous pappus con- 

 sists of two thin, scarious, lanceolate paleai, with usually two 

 smaller and shorter intermediate ones. 



ViGUiERA DELTOIDEA Gray ? — Magdalena Island. 



ViGUiERA LACINIATA Gray. —San Enrique. 



ViGuiERA SUBINCISA Benth. — Santa Margarita and Magda- 

 lena Islands. 



YiGUiERAMiCROPHYLLA Vasey& Rose. Common. SanEai- 

 mundo and northward. 



ViGUiERA, sp. — Growing in masses 6 feet high, San 

 Gregorio. 



ViGQiERA? PuRisiM^. Stems indurated 2 feet high, 

 branching from a perennial root, rough with rather sparse 

 strigose pubescence : leaves mostly opposite, broadly ovate- 

 acuminate, sinuate or obscurely dentate, callous pointed, 

 Ih inches long, an inch wide or less, attenuate at base 

 into a petiole of the same length, equally strigose-pubescent 

 upon both sides: heads 2-3 on short peduncles terminating 

 the branches, half-inch high: bracts of the involucre in 

 about 3 series, ovate-lanceolate, callous pointed, gradually 

 decreasing in size to the linear exterior ones, all conspicu- 

 ously ciliate with soft white hairs: rays neutral, 15-18 mm. 

 long; akenes effete, very narrowly-linear, smooth, triquet- 

 rous: paleye of the receptacle lacerate, the outer row ample, 

 flattened on the back and completelv enclosing the akenes ; 



