400 General Notes. [May, 



Manual, viz: Artemisia serrata Nutt, Scnceio lugens, Rich., 

 var. Hookeri Eaton, Plantago Rugelii Decaisne, Gerardia ten- 

 uifolia Vahl., var. macrophylta Benth., Cuscuta Gronovii Wild.. 

 var. latifolia Engelm., Polygonum Muhlenbergii Watson, Am- 



tida purpurea Nutt. F. A. Mansfield has compiled a list of 



plants (137 species and varieties) "discovered in Maine, chiefly 

 since the publication in 1868 of the ' Portland Catalogue of Maine 



Plants."' N. L. Britton has issued a circular of "Notes" 



for the guidance of those who have the " Preliminary Catalogue 

 of the Vlora of New Jersey." Attention is directed to many 

 doubtful natives, and difficult species, and also to the common 



names of plants. " The Index to the genus Carex of Gray's 



Manual," by Jos. F. James, issued as an extra in the Bo- 

 tanical Gazette, will prove very useful to all students of that 

 large genus. The list of New Mexico and Arizona plants col- 

 lected by H. H. Rusby, contains many interesting species. Sets 

 of these are offered for sale by the collector at Franklin, N. J. 



The February numbers of our botanical journals are full of 



interest. N. L. Britton in the Torrey Bulletin describes and fig- 

 ures (three fine colored plates) a new hybrid oak, between Quercut 

 Phellos and Q. nigra, and which he names Q. Rudkini. E. L. 

 Greene describes six new Compositae, mostly Californian ; J. B. 

 Ellis describes sixteen new species of fungi mostly from New 

 Jersey ; and G. E. Davenport contributes interesting " Fern 

 Notes," in which he gives reasons' for suspecting Asplenium 

 ebenoides to be a hybrid between Camptosorus rJiizophyllus and 



Asplenium ebencum. Dr. Engleman's " Notes on Yucca," in 



the Botanical Gazette include the description of a new species, 

 Y. elata, from the deserts of Arizona. L. M. Underwood brings 

 together in an alphabetically arranged catalogue the genera and 

 species of North American Hepaticae. It includes forty-nine 



genera, 219 species and seventeen varieties. In Jos. F.James's 



paper on " The Variability of the Acorns of Quercus macrocarpa, 

 in the Jour. Cinn. Soc. Nat. Hist, the author brings out to 

 a remarkable degree the variable character of the acorn of our 

 common bur-oak. "There are all gradations from no fringe at 

 all on the cup, to one which has a fringe half an inch long. The 

 cups are shallow to deep, thick to thin, extending half way up the 

 acorn, reaching to its apex, or almost entirely concealing it. 

 Eight figures accompany the paper. 



ZOOLOGY. 



Note ox the Geographical Distribution of certain Mol- 

 lusks.— The occasion for this note arises from a brief review of 

 Professor A. G. Wetherby's paper " On the Geographical Distri- 

 bution of certain Fresh-water Mollusks of North America, and 

 the probable causes of their variation," in this journal, March, 

 1882, page 231. The entire paragraph reads, " The Strepoma- 



