113 



(Mem. Boston Soc. Nat. Hist., iv., pp. 71-104; plates 9-12.) 



We 



valuable monographs. The present one is both systematic and 

 biological. The new species and varieties established are Lim- 



MacoMiii 



Suksdorfii 



O, Acetosella, L., var. Oregana, ((9. Orega^ia, Nutt) ; and Gera- 

 nium Caroliniafiimiy L., var. Texanum. The methods of pollina- 

 tion and seed-dissemination are discussed and a very large num- 

 ber of references to literature given. 



Irises — Note on our Native. — Sereno Watson. (Garden and 



Forest, i., p. i8.) 



Wats 



group and describing in a 



few words the geographical distribution, appeals to florists to 

 cultivate our native species and solicits seeds and roots from the 

 South and West for Prof. Michael Foster, Oxford, England, who 

 is making a critical study of the genus. 



Lichenology — Recent Contributions to American. 



Enumeratis Lichenum Streti Bekringii. — Exposuit W. Ny- 

 lander. (Caen, 1888.) 



Pyrenocarpece Cubenses a cl. C. Wright lectcB. — Auctore Dr. J. 

 Miiller, (Botanischer Jahrbucher, Leipzig, 1885.) 



Grapkidece FeeancB. — Auctore Dr. J. Miiller. (Mem. de la 

 Societe d'Histoire Naturelle de Geneve, 1887.) 



These three^ublications are of interest to students of American 

 lichens. The " ?t gives the names of the species collected by 

 the Nordensk' - id expedition in the region referred to, in 1878-79. 

 It enumerates 400 species, of which about 80 are new, and is 

 the fullest list of the lichens of this region ever published. At the 

 end is a revision of the lichens collected by Dr. Bean in 1880, a 

 list of which was published in the Proceedings of the U. S. 

 National Museum, Washington, 1884; Vol. vii.. No. i. 



The second publication contains the determinations of 

 Wright's Cuban Verrucariaceae, which were distributed several 

 years since, many of which may be expected to occur within the 

 southern Hmits of the United States. 



The third is a revision of the Graphidaceae of Fee's Essai sur 



