Neue Litteratur. 115 



V. Varietäten, Desceudeiiz , Hybriden. 



Dennert, E. 1911. Von Sterbelager des Darwinismus. 7. Tausend. 



^Halle, R. Mühlmann. 1911. 8». 120 pp. 1 Bildnis.) 

 East, E. M. 1911. The genotype hypothesis and hybridization. 



(Amer. Nat. XLV. p. 160—174. 6 fig.) 

 Nilsson, H. 1911. Pollenslangarnas tillväxthastighet hos Oenothera 



Lamarckiana och gigas. (Bot. Not. 1911. 1. p. 19—28.) 

 Nilsson-Ehle, H. 1911. Ueber Entstehung scharf abweichender 



Merkmale aus Kreuzung gleichartiger Formen beim Weizen. (Ber 



deutsch, bot. Ges. XXIX, 2. p. 65—69.) 

 Pipotta, R. e M. Puglisi. 1911. Di alcune osservazioni ed espe- 



rienze intorno alla comparsa ed alla persistenza di caratteri nelle 



forme vegetaÜ. [N. P.]. (Atti r. Acc. Lincei Roma 1, XX. 1. 



p. 6—10. 1 fig.) 

 Saunders, E. R, 1911. On inheritance of a mutation in the com- 

 mon foxglove [Digitalis purpurea]. (N. Phytologist. X. 1/2. p. 47 — 



63. 1 pl. 12 fig.) 

 Shepff, E. E. 1911. Tragopogon pratensis X parvifolius. (Torrej^a. 



XI. p. 14—15.) 

 Thiselton-Dyep, W. T. 1911. Review ot "The origin of species by 



mutation". by Prof. H. de Vries. (Nature. 1911. 2160. p. 103—104.) 

 Thiselton-Dyep, W. T. 1911. The inheritance of acquired charac- 



ters. (Nature. 1911. 2151. p. 371.) 

 Tlioday, M. G. and D. 1911. On the inheritance of the Yellow 



Tinge in Sweet Pea Colouring. (Proc. Cambridge Phil. Soc. XVI. 



1. p. 71—84.) 

 Tpabut, L. 1911. Sur une mutation inerme du Cynara cardunculus. 



(Rev. hortic. Algerie. XV. 1. p. 1—5. 2 fig.) 

 Vpies, H. de 1911. The mutation Theory. Experiments and obser- 



vations on the origin of species in the vegetable Kingdom. Trans- 



lated byj. B. Farmer and A. D. Darbishire. Vol. IL The origin 



of varieties bv mutation. (London, Kegan Paul and Co. Ltd. 1911. 



683 pp.) 

 Vpies, H. de 1911. Ueber doppeltreziproke Bastarde von Oenothera 



biennis L. und O. muricata L. (Biol. Cbl. XXXI. 4. p. 97—104.) 

 Wepnham, H. F. 1911. Floral evolution with particular reference 



to the sympetalous dicotyledons. (N. Phytologist. X. 3. p. 73—83. 



to be cont.) 

 Zevjlstpa Fzn., H. H. 1911. Oenothera nanella de Vries, eine 



krankhafte Pflanzenart. (Biol. Cbl. XXXI. 5. p. 129—138. 5 Fig.) 

 Zimmepmann, W. 1911. Hermaphroditismus und Sexualtransmu- 

 tation (Abnormsexuelles Verhalten von Weiden]. (Allg. bot. Zschr. 



XVII. 4. p. 49-56. 1 Taf.) 



VI. Physiologie. 



Apisz, W. H. 1911. Over het verband van prikkel en effect bij 

 phototropische krommingen van kiemplantjes van Avena sativa. 

 (Versl. kon. Ak. Wet. Amsterdam. 25 Maart. 191 1. p. 1254—1263. 6 fig.) 



Blackmann, F.. F. 1911. Experimental researches on vegetable 

 assimilation and respiration. VIII. A new method for estimating 

 the gaseous exchanges of submerged plants. (Proc. roy. Soc. Lon- 

 don. B. LXXXIII. 565. p. 374—388.) 



Blackmann, F. F. and A. M. Smith. 1911. Experimental resear- 

 ches on vegetable assimilation and respiration. IX. On assimilation 

 in submerged water-plants, and its relation to the concentration 



