﻿BOTANICAL GAZETTE 



Monograph of Senecio. — In 1902, Greenman published the first part of a 

 monograph of the North and Central American species of Senecio. 22 The 

 second part, beginning the synoptical presentation of species, has now ap- 

 peared. 23 Two subgenera are recognized: Eusenecio Hoffm. and Pseudogynoxis 

 Greenm., the latter including the single section Convolvuloidei. Not only- 

 are the full bibliography and descriptions of each species given, but exsiccatae 

 are cited freely, particularly such as occur in American herbaria. In the present 

 part 32 species are presented, representing 5 of the 22 sections. Two new 

 species are characterized, namely S. Townsendii from northern Mexico and 

 5. hypotrichus from central Mexico. — J. M. C. 



Carboniferous plants.— This memoir 24 consists of 150 pages and 30 superb 

 plates, which are far superior to anything we are accustomed to find in geo- 

 logical publications on this side of the Atlantic. The authoress devotes her- 

 self to the study of the plants of the well known reefs containing paleozoic plant 

 remains which lie to the west of St. John. She points out that the forms repre- 

 sented in the ledges are distinctly carboniferous, and as a consequence the 

 view of Sir William Dawson, which has been followed by many others, that 

 these deposits are of Devonian age, can no longer be maintained. In her 

 attitude in this respect she agrees with White of the United States Geological 

 Survey.-E. C. Jeffrey. 



Trees of Texas. — Lewis 2 * has published an illustrated manual of the native 

 and introduced trees of Texas, intended chiefly for those who do not have 

 access to the more technical manuals. The descriptions are much simplified, 

 and this fact, together with the numerous illustrations, should bring the woody 

 plants of Texas within easy reach of all those who are interested in them. 

 Over 200 species are included, Quercus being much the largest genus, with 

 25 species.-J. M. C. 



Malayan ferns. — Capt. van Alderwerelt van Rosenburgh 26 has de- 

 scribed 73 new Malayan ferns, representing 23 genera. The genera represented 

 by 5 or more new species are as follows: Pleopeltis (10), Dryopteris (8), Poly- 

 podium (8), Phegopteris (7), Hemitelia (5), Hymenophyllum (5), Lindsaya (5). 

 In addition to the ferns new species are described in Lycopodium (3) and 

 Selaginella (21).— J. M. C. 



» Engl. Bot. Jahrb. 32:1-33. 1902. 



» Greenman, J. M., Monograph of the North and Central American species of 

 the genus Senecio. Part II. Ann. Mo. Bot. Gard. 2:573-626. ph. 17-20. 1915. 



^Stopes, Dr. Marie, The fern ledges' carboniferous flora of St. John, New 

 Brunswick. Department of Mines, Geol. Survey of Canada. Memoir 41. 1915- 



« Lewis, Isaac M., The trees of Texas. Bull. 22. Univ. Texas, pp. vi+169. 

 figs. 48. I9I5- 



26 Van Rosenburgh, Capt. C. R. W. K. van Alderwerelt, New or interesting 

 Malayan fems 6. Bull. Jard. Bot. Buitenzorg 10: no. 16. pp. 60. ph. 10. 1914- 



