I04 



(i) E. Mameli — G. PoLLACCi, SuU'assimilazione diretta dell'azoto atmos- 

 ferico libero nei vegetal! (Atti dell'Istituto Botanico di Pavia, Ser. II, 

 XIV, 159-257, Con 3 tavole.) 191 1. 



(2) E. Mameli — G. Pollacci, Ancora sull'assimilazione diretta dell'azoto 



atmosferico libero nei vegetali (Atti dell'Istituto Botan. di Pavia, 

 XVI, 197-203). 



(3) Schramm, J. R., Grass-green algae and elementary nitrogen (Science, 



XXXIX, 260) 1914. 



(4) Moore, B., T. A. Webster., Studies of photosynthesis in freshwater 



algae (Roy. Soc. London Proc. Ser. B. 91 (1920), X. B. 638, pp. 201- 



215)- 



(5) Moore, B., Whitley E., Webster, T. A., Studies of photosynthesis 



in marine algae (idem, Ser. B. 92, (1921) N. B. 642, pp. 51-60). 



(6) Waxn, F. B., The fixation of free nitrogen by green plants (Amer. Journ. 



of Bot. VIII, i), 1921. 



(7) Frank, B., Ueber die Stickstoffbindenden Algen des Ackerbodens. 



(Chem. Zeitung, 1888, n. 81). 



Ueber den experimentelle Xachweis der Assimilation freien StickstofTs 



durch erdbodenbewohnende Algen (Ber. d. B. Bot. Ges. VII, 34) 



1889. 



(8) Gautier et Drouin, Recherches sur la fixation de I'azote par le sol et les 



vegetaux. (Comptes rendus des seances de I'Acad. d. France, C\'I, 

 754, 863, 944, etc.) 1888. 



(9) Lipman, C. B., Taylor, J. K., Proof of the power of the wheat plant 



to fix atmospheric nitrogen (Science, LVI, N. 1456, Nov., 1922). 



EsTACioN Experimental Agronomica, 

 Cuba 



SHORTER NOTES 



Notes On A New Rose-Flowered Robinia From 

 South Carolina 



P. O. Schallert 



The distribution of the rose-flowered Robinias in the eastern 

 United States seems to be centered in the extreme western part 

 of South CaroHna and in the adjoining counties of North Caro- 

 lina. The greatest multiplication of individual plants seems to 

 occur in western North Carolina, but the greatest development 

 of species seems to have taken place along the western edge of 

 South Carolina. 



W. W. Ashe has recently called to my attention a plant which 

 he has in cultivation, the stock of which came from Oconee 

 County, South Carolina, and which seems to be so different 



