Floristik, Geographie, Systematik etc. 451 



probable succession is considered and a Classification of the plant 

 associations is given. Each of these associations (pages 47 — 145) 

 are considered in a fuUness of detail that prohibits a complete 

 review of each in this Journal. An annotated list of species and a 

 bibliography conclude this admirable piece of finely illustrated 

 ecologic work. John W. Harshberger. 



Haglund, E., Scirpus radicans Schkuhr funnen i Västman- 

 land. [Scirpus radicans Schkuhr in Westmanland gefun- 

 den]. (Svensk bot. Tidskr. IV. p. 108-112. 1910.) 



Dahlgren, K. V. O., Ytterligare om Scirpus radicans Schkuhr. 

 [ W eitere Notizen über das Vorkommen von Scirpus ra- 

 dicans Schkuhr in Schweden]. (Svensk bot. Tidskr. IV. p. 

 (78)— (80). 1910.) 



In den Jahren 1909 und 1910 wurde diese eigentumliche Scirpus- 

 Art auf ein paar Lokalitäten in der Nähe von Sala (im mittleren 

 Schweden) angetroffen. Der Fund ist der zweite bisher in Schwe- 

 den gemachte. Die Lokalitäten selbst bieten auch Interesse dar, da 

 sie wenigstens teilweise auf dem Boden eines erst kürzlich trocken 

 gelegten Sees liegen, woraus hervorgeht, dass die Art sich in 

 schneller Verbreitung befindet. Wahrscheinlich ist auch, dass sie 

 in die fragliche Gegend erst kürzlich vorgedrungen ist. 



Rob. E. Fries. 



Happer, R. M., Preliminary Report on the Peat Deposits of 

 Florida. (Fla. Geol. Surv. 3rd. Ann. Rep. 1910. p. 201—375. with 

 map, 12 pl. and numerous textfig.) 



The author emphasizes the fact that Florida is abundantly 

 supplied with peat and the different sources of Florida peat are 

 considered by a careful analysis of the principal peat forming plants, 

 as the}^ are found in association in the great diversity of geoiogic 

 divisions and various kinds of swamp areas throughout the State. 

 A map which displays these ditferent regions of the State is meant 

 to connect with Harper's previously published maps of Georgia and 

 the Carolinas. His Classification of swamps is three or four times 

 more elaborate than that of Prof. Shaler, which has long been 

 considered to be a model of its kind. One feature which is note- 

 worthy in this valuable scientific contribution is the correlation of 

 the plants with fluctuations in the water level. 



The foUowing regions of the State are considered : West Florida 

 Coast Region, West Florida Pine Hills, West Florida Limestone 

 regions, Middle Florida Hammock Belt, Lime-sink Region, Middle 

 Florida Fiatwoods, East Coast Strip, South Florida Fiatwoods, 

 Miami Limestone Region, Coast Prairie, the Keys. A detailed Clas- 

 sification of the Florida peat deposits is next presented. Harper 

 recognizes the following kinds of swamps, bogs, and marshes as 

 concerned in peat formation: 



Salt water 1. Marine marshes; 2. Mangrove swamps. Muddy 

 water 1. Alluvial; 2. Estuarine. Calcareous water. Swamp 

 water 1. On calcareous rock or soil; 2. Non calcareous (a) Flowing 

 (alluvial, estuarine) (b) Seeping (tyty swamps, green swamps, slash- 

 pine bogs, non-alluvial, swamps of lake region, non alluvial swamps 

 of De Soto County). c. Stagnant (drying up in spring, such as 

 cypress ponds, bays; permanent open water, such as small lakes, 

 sawgrass marshes, cypress swamps; completely filled with vegeta- 



