754 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Fungi, Three new Genera of. By G. F. Atkinson (Bot. Gaz. 

 xx\iv. No. 1, p. 36). — The author describes species of Eomycenella, a new 

 genus of Hymenomycctcs (with figure), occurring on decaying leaves 

 of Rhododendron maximum ; Eoterfezia, a new genus and family of 

 Elaphomycetes, parasitic on perithecia of a Sordaria (with figure) ; and 

 Dichjobole, a new genus of Phalloids, occurring in sandy soil (with 

 figures). — G. H. 



Fungi, Two New Parasitic. By P. Hennings (Zeit. f. Pflanz. xii 

 1902 ; pp. 14-16). — Septoria Caragance, n. sp., on leaves of Caragana 

 arborcscens, L. ; the spots are first yellowish, then brown, causing dis- 

 coloration and withering of the leaf. Fusarium Yogelii, n. sp., on False 

 Acacia (Robin ia) ; brown spots on the leaf, then shot-holes. Both came 

 from tree-nurseries at Tamsel, Germany. — W. G. S. 



Gelsemium sempervirens. By Sir J. D. Hooker (Bot. Mag. tab. 

 7851). — Nat. ord. Loganiacecz, tribe Gelsemiea. Native of Southern 

 United States. It was introduced by Tradescant in 1640. A tall 

 climber, with fragrant golden-yellow flower-buds, but paler in blossom. 



G. H. 



Gentiana tenella. By B. Daydon Jackson (Journ. Bot. 476, pp. 

 296-7; 8/1902). — An explanation that the correct authority for this 

 name is Rottboll, to be cited as " Rottb. in Kiob. Skr. Selsk. x. (1770), 

 436." — G. S. B. 



Geographical Distribution of North American Plants. By 



A. Engler (Not. Konig. Bot. Berlin, Appendix IX. ; May 15, 1902).— This 

 is a long article on that section of the New Botanic Garden at Dahlem- 

 Steglitz, near Berlin, which has been arranged to illustrate the geogra- 

 phical distribution of North American plants. The paper is too long to 

 abstract in full, but the following outline will give some idea of the plan 

 pursued : — 



Engler subdivides North America into four principal regions : (i.) 

 Arctic America, the plants of which can be but imperfectly represented 

 in his garden, (ii.) Sub-Arctic North America, with the provinces of 

 Alaska, the Peace River district, Hudson's Bay, and Labrador, especially 

 rich in conifers and more or less continuous with corresponding regions 

 in Asia and Europe ; the plants of this region are abundantly represented, 

 (iii.) Atlantic North America, with provinces such as those of the great 

 lakes (Pinus Strobus and the deciduous forests), the Mississippi and 

 Alleghany provinces with deciduous forests passing down into the Pine 

 barrens and drier regions, the district of evergreen forests characteristic 

 of the Southern Atlantic States, and finally the great prairie zones, (iv.) 

 The North American Pacific region, including the district of Pacific 

 ConifercBj that of the Rocky Mountains, and those of the Western 

 prairies, deserts, and salt lands. 



These are dealt with in great detail, and the paper is in effect an 

 essay on the geographical subdivision of North America, with respect to 

 its flora, illustrated with a map. A plan of the gardens is also added, 

 showing how the author has grouped the various plants selected to 

 represent his views. — H. M. W, 



