36 THE PLANT WORLD 



NOTES ON CURRENT 

 LITERATURE 



Under the title "Fernwoi't Papers," tlie Linnaeau Fem Cliapter 

 lias recently issued an interesting booklet of forty-eiglit pages, contain- 

 ing five papers "presented at a meeting of - fern students held in New 

 York City, June 27, 1900, under the auspices of the Linnaean Fern 

 Chapter." The titles and authors are as follows : "The Genus Isoetes 

 in New England," by A. A. Eaton ; " The System of Ferns proposed in 

 Die Natuerlichen Pflanzenfamilien," by Professor L. M. Underwood ; 

 "Experiments in Hybridizing Ferns," by Miss Margaret Slosson ; 

 "Athyrium as a Genus," by B. D. Gilbert; and "On the Occurrence of 

 the Hart's-tongue in America," by William E. Maxon, Li the first- 

 mentioned are contained descriptions of all the New England forms, of 

 which four species and one variety are regarded as new. 



The first number of the second series of the BuUefin de UHerhier 

 Boissier has recently appeared. It contains two articles of interest to 

 cryptogamic botanists ; one by H. Christ on a collection of ferns from 

 the upper Amazon, collected by Dr. J. Huber, and containing a list of 

 32 species with notes and descriptions of one new species of Polyhotrya 

 and four of Selaginella, and the other by H. and P. Sydow on new Bra- 

 zilian fungi collected by Ule, in which two new genera and thirty new 

 species are proposed. The new genera are Lycopolia Sacc. & Syd., be- 

 longing to the Pyrenomycetes, and Pazsclikeella Syd., among the Fungi 

 Imperfecti.— C. L. S. 



In the January Botanical Gazette Professor C. S. Sargent presents 

 the second of his valuable papers on new or little known North Ameri- 

 can trees, in which he describes a new Gleditsia {G. Texana), and some 

 seven new arborescent species of Crataegus. The Gleditsia is a tree 

 100 to 120 feet in height, with a trunk rarely more than 2| feet in di- 

 ameter. It grows in the high, rather dry bottom-lands of the Brazos 

 river, Texas, and may be readily distinguished from the common honey- 

 locust {G. triacanthos) by having spineless branches and smoother pale 

 bark. * 



Dr. John W. Harshberger has just published in the Proceedings of 

 the Academy of Natural Sciences of Philadelphia, a valuable " Ecological 

 Study of the New Jersey Strand Flora." 



