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of our native plants. Of those who have contributed to 

 swell the list of known county species of plants and who 

 have not published any writings on the subject, it will be 

 impossible to speak separately. They must be content to 

 feel that they have aided the cause of botanical knowledge as 

 they certainly have, and are deserving their share of credit 

 for so doing. There are many who have collected and 

 prepared specimens which will always serve as pleasant 

 reminders of their work. Among such are Mr. B. D. 

 Greene, who added several plants to the flora from near 

 Tewksbury; Mr. Wm. P. Richardson and Mr. S. Bass, 

 who botanized near Salem ; and more recently Mrs. Alex. 

 Bray, Mrs. Charles Grover, Mrs. J. Babson and Mrs. 

 Davis, who have added many species to the list of Cape 

 Ann Algae ; Mr. Frank Lufkin of Pigeon Cove, who has 

 noticed many plants new to that region ; Mr. John H. 

 Sears, of Danvers, whose specialty, the forest trees, has 

 been the means of -bringing together at the Museum of the 

 Peabody Academy of Science one of the best local collec- 

 tions of native woods in any museum ; Mr. W. P. Conant, 

 who has added many species of Cyperaccre and Gramineas 

 and a rare Botiychium to the flora ; besides many others 

 whose names will appear in the list associated with the 

 plant which they have been fortunate to discover. 



To those whose assistance either by their writings, by 

 specimens contributed, or who have rendered any assist- 

 ance by information or other attention, the writer desires 

 to express his warmest thanks. It would be impossible for 

 him to specify those who have aided him or their manner 

 of so doing, and he can only thank all collectively which 

 he does most sincerely. 



