6 THE GENUS CAREX IN CALIFORNIA 



During the middle period there were many collectors. J. S. Rothrock was 

 attached to the Wheeler Survey as botanist and explored the region between Santa 

 Barbara and Mt. Whitney in 1875. His gatherings included sedges. J. G. Lemmon 

 made general collections (which included Carices) in the northern Sierra Nevada 

 from 1875 to about 1882, and also in Southern California. Boott named Carex 

 Lemmoni in his honor. S. B. Parish explored Southern California more thoroughly 

 than any other botanist and always gave attention to Carex, both in the field and 

 in the printed results of his studies. His activities date from about 1876 and have 

 continued without interruption to the present time. Others to be named are E. L. 

 Greene, T. S. Brandegee, and Alice Eastwood. W. R. Dudley stands out prom- 

 inently, since he gave especial attention to Carex, both in the Coast Ranges and 

 Sierra Nevada. In the latter part of this period M. S. Baker collected zealously in 

 northeastern California, expecially in Shasta and Modoc counties, and found not 

 a few sedges. 



During the third period, H. M. Hall, L. R. Abrams and W. L. Jepson, in the 

 course of general field work, collected Carex in various parts of California. In addi- 

 . tion there have been many local resident collectors. J. P. Tracy has worked suc- 

 cessfully in the Humboldt County area; B. C. Goldsmith made a collection in 

 Siskiyou County especially for the research on this paper; L. S. Smith gathered a 

 small collection in northeastern California; while A. L. Grant collected a considerable 

 number of specimens in the Tuolumne and Fresno regions of the Sierra Nevada. 

 A. A. Heller has collected with great zeal in many parts of California and has accum- 

 ulated valuable material. Ezra Brainerd visited the Tahoe and Shasta regions in 

 1896 and collected good material in and around Strawberry Valley on the Placer- 

 ville-Tahoe road and at Sisson. Five new species have been described from his 

 collections. 



The limits imposed by space do not permit the mention of the names of all 

 who have contributed material to the preparation of Mr. Mackenzie's monograph, 

 but the extent and success of their cooperation are revealed by the great additions 

 which the author has made to our knowledge of the genus. William Boott, in volume 

 two of the Botany of California, published in 1876, described seventy-eight species 

 as occurring in California, while the present paper describes one hundred twenty- 

 three. This increase in the number of known representatives of the genus does not, 

 however, tell the full story. Knowledge of the forms is at present very much greater 

 and the species here described are more accurately delimited than formerly. This 

 increase in knowledge is directly related to the more abundant and more carefully 

 prepared material which collectors now make it their object to secure, for it is only 

 with long series of superior specimens that the labors of the monographer in so 

 critical a genus may come to their full fruition. 



