224 CALIFORNIA ACADEMY OF SCIENCES. 



this be the case, there will still be no need to propose a new- 

 genus, since, in the one standing nearest to Corethrogyne, 

 separated from it indeed by the character of the corolla 

 alone, namely, Lessingia, the flowers are, in some species, 

 yellow, in others purple, (never, however, "white," as in 

 Syn. Fl. ii. 54, they are said to be "in most species"). C. 

 detonsa is still as imperfectly known as when published; and 

 of C. carta I saw but one plant, but that one fully six feet 

 high. Both these species are shrubby; but so is that com- 

 monest of all species, C . filagmifolia, Nutt., at least at base. 



fMiCROPUS Californicus, Fisch. & May. 



*Filago Californica, Nutt. A fine growth of this spe- 

 cies about the springs, north of the middle portion of the 

 island. 



Filago Arizonica, Gray. Dry mesas toward the south 

 end. 



Graphalium Sprengelii, Hook. & Arn. Only one plant 

 seen. 



Franseria camphorata, Greene. (See page 192.) 



tLEPTOSYNE GIGANTEA, Kellogg. 



Hemizonia frutescens, Gray. Only one suffrutescent 

 plant seen, and that on the precipice. It is common on the 

 level ground and hillsides, and, in such places, strictly an- 

 nual. 



Perityle incana, Gray. 



Pebityle Californica, Benth. 



B^ria Palmeri, Gray. 



fERIOPHYLLUM CESPITOSUM, Dougl. 



Amblyopappus pusillus, Hook. & Arn. 

 Matricaria, discoidea, DC. 



