S8 THE PLANT WORLD. 



Mr. C. G. Lloyd, of Cincinnati, has just issued an eight-page pam- 

 phlet, under the title of Mycological Notes, which contains descriptions 

 of about a dozen species of the larger Lepiotas. He is prepared to 

 supply unmounted photographs of these species at the low sum of ten 

 cents each, a good photograph being in some particulars better for 

 study than even a colored plate or a dried specimen of the plant itself. 



In a revision of the Bermuda ferns in the December number of 

 the Torrey Bulletin, Mr. B. D. Gilbert incidentally reports a fern 

 new to the United States flora. This is AcrosticJiuvi lomarioides, a 

 species recently separated from the common A. anreum by Jenman. 

 It is found in this country in South Florida, from which point it ranges 

 through the Bahamas and West Indies to Brazil. It is a large and 

 magnificent species, being often eight or nine feet high. 



While in southwestern Louisiana in September, 1898, I noted the 

 presence of the Water Hyacinth {Piaropus crassipes (Mart.) Britton) 

 in great quantity at Lake Charles. The lake, which is simply an 

 enlargement of the Calcasieu river, is only a mile or so in diameter. 

 The river channel follows the western bank. The shallow water of 

 the eastern side of the lake is completely filled for a distance of 100 

 feet or more from the shore. The wharves are entirely surrounded 

 by the weed, large masses of which are continually broken away and 

 driven to and fro across the lake by the shifting winds. The rapid 

 increase of the plant is indicated by the fact that this drifting has been 

 noticed only during the last year. The lower reaches of the river are 

 said to be badly infested and almost impassible for small boats. The 

 large racemes of bright flowers form a pleasing contrast to the green 

 foliage, and are frequently gathered by the numerous boating parties 

 on the lake. — Car let on R. Ball, Missouri Botanical Gardens. 



. . BOOK REVIEWS . 



Outlines of Forestry; or the Elementary Principles Underlying 

 THE Science of Forestry. By Edwin J. Houston. J. B. Lip- 

 pencott Co., Philadelphia. 



Although originally published several years ago, the increased 

 prominence that forestry has assumed, within the past year or two, 

 makes this little book of renewed interest. It is a series of plainly 

 written chapters on the prominent characteristics which underly mod- 

 ern scientific forestry, such as Tree-planting, Reforestation, Climate 

 and Rain-fall as Influenced by Forests, the Formation of Soil, etc. It 

 is well worth a place in the library of all interested in the preserva- 

 tion of our forests. — F. H. K. 



