6o8 HISTORY OF PASADENA. 



When no period is given, it is to be understood that one or both the above 

 conditions are present all of the year. The elevation of many of the plants 

 is given, and for most of the others the elevation can be inferred from the 

 place where found, by any one familiar with the region. I have also aimed 

 to give the common name of each plant having a good one. When the 

 specific name of a parasitic fungus is formed from the generic name of the 

 host-plant, the initial letter has been used for the genus of the latter. All 

 Agarics stated to be edible have been tested by myself, and several of them 

 by some of my students. 



Of most of the Bacteria listed, and many others not yet identified, pure 

 cultures have been made in my laboratory. The pathogenic Bacteria are 

 not listed. Little effort has been made to identify the Diatoms of the region, 

 hence few of them are listed. Of the Agarics, about fifty collected species 

 remain undetermined ; of Lichens, about ten ; and of Mosses, about the 

 same number. The number of species and varieties listed is 1056, of which 

 a large number were never before collected in the State. Sixty-two of them 

 proved to be new to science. Most of these have been described by group 

 specialists and by myself, in the botanical journals and in the proceedings of 

 scientific societies of America. The place of publication of each new species 

 is cited in the list. Being opposed to the naming of new species after col- 

 lectors, I have attempted to prevent any being given my name, and have 

 succeeded in all cases except one that was published in spite of my protest. 



I have attempted to follow the Rochester rules for nomenclature, but no 

 doubt have failed to do so in many cases. The system of classification used 

 is, in the main, that of Dr. Bessey. In the groups below the Spermaphyta, 

 no smaller subdivision than Bessey 's orders have been used above genera. 

 In the Spermaphyta, family names are used, Bessey's ordinal names being 

 omitted. 



Throop Biological Laboratory, 



Pasadena, Cal., September 26, 1895. 



PROTOPHYTA. 



CLASS I. MYCETOZOA. Slime Moulds. 



RETICULARIA Bull. 



R. UMBRINA Fries. On decaying wood. Frequent. March — May. 

 HP:MIARCYRIA RosL 



H. RUBiFORMis (Pers.) Rest. On decaying wood. M. C." January — Mav. 

 TRICHIA Hall. 



T. VARiA Pers. On decaying wood. M. C. January — April. 

 STEMONITIS Gled. 



S. FUSCA Roth. On decaying wood. Frequent. March — September. 



* Abhrkviations.— The following abbreviations have been used to designate particular places bv local 

 name, where specimens have been found : Lincoln Park I<. P.; Arroyo Seco, A. S.; Los Robles Ca"nvon. 

 L. R. C ; Oak Knoll, O. K ; Oak Knoll Canyon, O. K. C; Wilson Canvon, W. C: Wild Grape Canyon"[see 

 page :i77]. W. G. C; San Gabriel Mountains, S. G. Mts.; Millard Canyon, M. C ; Rubio Canyon, K. C; 

 Little Santa Anita Canyon, L. St. A. C; "Wilson's Peak, W. Pk.; Mount Lowe, Mt. L. 



