44 



tribiilioiis from lliu National llerl)ariuiH (issucMl July 

 31, 1001), and lat(M- (October, 1901), was reissued as a 

 report from the Alal>ama (leolo^ieal Surv(\v. After 

 midsummer of 181)7 Dr. :Mohr became so o€-cui)ied in the 

 preparation of llic manuscrijit for this «;T(nit work that 

 at Ills request the sending of plants was discontinued, 

 except as he occasionally asked for material in some spe- 

 cial group. The later collections have been determined by 

 Dr. eT. K. Small, Mr. G. V. Nash, Dr. Edward L. Greene 

 and other specialists, and by the writer, wli(» has recently 

 had an opportunity to compare some of the more doubt- 

 ful material with the rich collections in the herbarium 

 of the New York Botanical Garden. Some fifty species 

 are rei)orted by Dr. Mohr of our collecting that are not 

 represented in the harbarium of the Polytechnic Insti- 

 tute ; or at least are not represented under the name by 

 which Dr. Mohr reports them. These species are in- 

 cluded in this list. Dr. Mohr being cited in each case as 

 the authority. These specimens will be found either in 

 the herbarium of Alabama plants deix>sited by Dr. 

 IMohr at the State University at Tuscaloosa, or in his 

 ])rivate herbarium, which is now incorporated with the 

 National Herbarium at Washington. In part, at least, 

 these species represent uniques that did not chance to 

 be again collected by us. There are, however, too many 

 to be whollv accounted for in this wav, and it seems 

 ]>robable that some of them represent cases where Dr. 

 Mohr found occasion to change his original determina- 

 tion of the sijecimens. It has not been possible to trace 

 these cases, for since the publication of Dr. Mohr's 

 work I have not had access to the collections. It has 

 seemed best to include these names, but with this word 

 of Avarning as to the possibility of error through includ- 

 ing two determinations for the same plant. 



