Three common species of Amblystegium, A. orthocladon, A. radicale, and A. 

 varium, are not given in Demetrio's list, and, as these are very common species in 

 wet ground, I do not see how they could have been overlooked. The attractive 

 little Hypnum, H. Patientiae, so common on damp rocks in the Ozark region ap- 

 pears to have escaped the attention of Demetrio, for it is not in his list. 



It is true that a number of notes on Missouri mosses had been published 

 previous to Demetrio's list, and references to species found in the State by 

 Renauld and Cardot, Cardot, Mrs. Britton, Best, Grout, Lesquereux and James, 

 Paris, and myself, but none of these were lists of Missouri species. 



Probably the first knowledge of Missouri mosses we had was when Drum- 

 mond in 1841 published or distributed his Musci Americani (S. States), of which 

 21 species were collected in Missouri, some of them being type specimens. Of 

 these 21 species, 4 were new species and have not been collected in the State 

 again, 5 were common species, 7 others have not been collected in the State since 

 then, I has been collected once in the State by one other collector, and 3 have been 

 collected by but 3 other collectors in Missouri. Demetrio collected 8 species of 

 those collected by Drummond. 



Dr. F. Pech\ in 1842 and 1843, made a large collection of plants at Louisiana, 

 Missouri, among which were 66 species and varieties of mosses, in 42 genera, which 

 were included in a Catalogue of plants published by the U. S. Department of 

 Agriculture in 1866. Of these 66 species and varities quite a number were doubt- 

 fully determined or were errors of locality, as no one has since collected these 

 species in Missouri, and of the more common species Demetrio has collected 30. 



In 1884, Lesquereux and James published their Manual of the Mosses of 

 North America, in which 6 species of mosses were credited to Missouri, 4 of these 

 having been previously recorded and 2 being new; Demetrio collecting but I 

 of these species. 



In 1892, Renauld and Cardot published their Musci AmericcE Septentrio- 

 nalis, in which 15 species are credited to Missouri, evidently based on the collec- 

 tions of Drummond, Cope, and Hall, and of the 15 cited for Missouri, Demetrio 

 has collected 6. In 1892, Cardot published his Monograph of Fontinalis in which 

 one more species new to Missouri is given, but this is also given in Demetrio's 

 list. Between 1892 and 1907, many genera of mosses were revised and many new 

 species were described, and 21 species were recorded for Missouri, only i of these 

 being collected by Demetrio. 



From the very first publication by Drummond in 1841, up to the time Demet- 

 rio published his list, there had been recorded 120 species and varities of mosses 

 for Missouri, of which number Demetrio records 40, the remaining 60 being 

 newly recorded. 



Only two species of Demetrio's list are given as determined by himself, the 

 determinations of the others being credited to 8 other bryologists, and, as there 

 seem to be several things worth recording about this interesting paper, I think 

 they will be very appropriate here. 



^ The Mosses of the Pech Catalogue — Missouri. Bryologist 19 : 52-60. July, 19 16. B. F. 

 Bush. 



