Floristik, Geographie, Sj^stematik etc. 417 



Aust, K., Botanische Exkursion auf die Hainburger 

 Berge. (Verh. k. k. zool.-bot. Ges. LXIV. 7/8. p. 213 der Sitz.- 

 Ber. Wien 1914.) 



Aut dem „ Seh ülerbergl" bei Hainburg i. N.-Oe. gibt es 

 eine charakterische Kalkflora {Alyssum montanuni L., Helianthemtcm 

 canum Dun., Poa badensis Hke. etc.). An den südseitigen Gehängen 

 des aus Grauwackenkalk bestehenden 344 m hohen ßraunsberges 

 sichtete man Sorbits graeca (Spach) \;=z Sorbits aria var. cretica Ldb.], 

 die bei Hain bürg den äussersten nordwestlichen Vorposten hat, 

 Iris pitmila L., Astragalus vesicarius, Orchis ustulata L., Echinops 

 Büro, Jurinea mollis Rchb., Cantpanula sibirica L., Scorsonera his- 

 panicn L., Euphorbia Gerardiana Jacq., Stipa Grafiana Stev., Diait- 

 thiis Ltimnitseri Wiesb. in grossen Büschen und Cytisus aiistriacits 

 L., sehr häufig. Im Teichtale Euphorbia purpurata Thuill. 



Matouschek (Wien). 



Battandier, J. A., Note sur quelques plantes d'Algerie 

 nouvelles, rares ou critiques. (Bull. Soc. bot. France. LXI. 

 p. 51—54. 1914.) 



Especes nouvelles: Papaver Mairei Batt. et Moricandia Foleyi 

 Batt., „probablement la plus belle Crucifere du Nord de T Afrique." 



J. Offner. 



Cannon, W. A., Specialization in Vegetation and in 

 Environment in California. (The Plant World. XVII. p. 

 223 -237. 3 figs. Aug. 1914.) 



The author attempts to show in this paper that the climate of 

 California is a very diverse one, and that its diversit}^ is asso- 

 ciated directly with the state's great physiographic complexity pro- 

 ducing a highly specialized environment. Associated with such 

 specialization, the flora is extremely diverse, and may be highly 

 specialized, as is shown by the similar stamp put on the flora of 

 areas over which some one environmental character is especially 

 prominent, as, for example, the d warf forest, or chaparral. Another 

 floral specialization is shown in the limited distribution of many 

 species some of which are restricted to a Single locality and in the 

 response seen in individual adjustment to environment. 



Harshberger. 



Carleton, M. A., Adaptation of the Tamarisk for Dry 

 hands. (Science new ser. XXXIX. p. 692-694. May 8, 1914.) 



A plea is made for the species of trees belonging to the genus 

 Tamarix which show drought-resisting qualities in the Great 

 Plains ot the United States, and which will serve the purpose 

 of soil-binders and windbreaks. Harshberger. 



Chevalier, A. et O. Roehrieh. Sur l'origine botanique des 

 Riz cultives. (R. C. Ac. Sc. Paris. CLIX. p. 560-562. Oct. 1914.) 



Les auteurs ont reconnue en Afrique l'existence de quatre 

 especes spontanees dCOrisa, distinctes des Riz cultives: 0. latifolia 

 Desv. {0. punctata Kotschy) et trois especes provenant du demem- 

 brement de VO. Barthii A. Chev. (1911): 0. breviligulata A. Chev. et 

 Roehrieh, qui parait etre le type originel ou une forme tres rap- 



Botaa. Centralblatt. Band 128. 1915. 27 



