262 Floristik, Geographie, Systematik etc. 



respectively to wild plants and cultivated trees and shrubs which 

 flower respectively in spring and in summer and autumn, to the 

 autumnal states of trees and shrubs, and to cultivated herbs and 

 potted shrubs. Families and genera are segregated into their units 

 in succeeding keys. Used in connection with the Standard floras 

 and cyclopedias of cultivated plants, a helpful aid to the study of 

 the species included in it. Trelease. 



Darling, C. A., Spring flower s. Published by the author. 

 (Columbia Univ., New York City. VIII. 106 pp. 75 cts.) 



A pocket manual of keys for field identifications, based on the 

 corresponding part of the author's "Handbook of the wild and cul- 

 tivated flowering plants", intended for use in the eastern United 

 States and with the more usual species. Trelease. 



Drodow, V., K systematike roda Bolboschoemis Palla (ßcir- 

 piis L. exparte) i ego rasprostraneniju v Sibiri. [Zur 

 Systematik der Gattung Bolboschoenus und ihre Ver- 

 breitung in Sibirien]. (Travaux Mus. Bot. Acad. imp. sc. 

 St. Petersbourg. XI. 1913. p. 86—96. Russisch.) 



I. Bolboschoemis Palla. 



1. B. niaritimus (L.) Palla. 



var. typicus Asch, et Graebn. 1902 (*). 



var. digynus Godr. 1844 (*). 



var. nova Desoulavii (folium inferius involucrale rectum 



ramuli inflorescentiae monostachyi; st3ii bifidi; nux com- 



pressa); 

 var. relaxum Krylow. 



2. B. cornpactiis (Hoffm.) Drobow. 



1. forma nova rnaior (culmi 70—100 cm longi, spiculi sub- 

 sessiles, umbella sublaxa); 



2. f. nova typiciis (culmi usque ad 70 cm longi, umbella 

 compacta 3 — 7 spiculos) (*)j; 



3. f. nova huniilis\^) culmi 10—20 cm longi, umbella mono- 

 raro 2 — 3 stachya; spiculae 1 cm longae, 0,6 cm latae); 



4. var. nova termistachyus (culmus gracilis, folia tenuia, 

 spiculae oblongo-lineares, 1—2 cm longae, 1,5—2 mm 

 latae). 



Die mit * versehenen Formen sind abgebildet. Die Verbreitung 

 der Formen in Sibirien wird genau angeführt. 



Matouschek (Wien). 



Free, E. E., The topographic features of the desert ba- 

 sins of the United States with reference to the possi- 

 ble occurrence of potash. (Bull. U. S. Dept. Agric. W. 54. 

 May 8, 1914.) 



In this bulletin are named specifically 200 in closed desert 

 basins of which 126 are of importance in regard to the supplies of 

 potash and this number is practically reduced by the process of 

 elimination. Finally, the basins are tabulated in which all known 

 conditions are favorable to the accumulation of potash salts, given 

 in Order of area. The two largest basins are found to be Lahontan 

 45,730 Square miles and Death Valley 23,560 squale miles and 

 the smallest Clayton of 550 Square miles. Harshberger. 



