34 Botanisches Centralblatt. 



Gregoire, V. 1905. Les resultats acquis sur les cineses de maturation 

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Hensel, E. P. 1905. On the movements of petals. (Univ. Stud. V. 38 



PP-) 

 Janssens, F. A. 1905. Spermatogenese dans les batraciens. III. Evolution 



des auxocytes mäles du Batracoseps attenuatus. (Cellule XXII. 2. 



p. 379—425. 7 pl.) 

 Kny, L. 1905. Ueber kiinstliche Spaltung der Blüthenköpfe von Heli- 



anthus annuus. (Naturw. Wschr. N. F. IV. 47. 8 pp. ill.) 

 Lloyd, F. E. 1905. The course of the poUentube in Houstonia : a pre- 



liminary note. (Torreya. V. p. 83—85.) 

 Loeb, J. 1905. On an improved Method of artificial Parthenogenesis. 



(Univ. of California Publ., Physiol. II. 10/11. p. 89-92. 14. p. 113 



— 123.) 

 Oliva, A. 1905. Vergleichend anatomische und entwickelungsgeschichtliche 



Untersuchungen über die Cruciferensamen. (Zschr. allgem. österr. 



Apothekerver. XLIII. 41;52. 104 Textabb.) 

 Pearson, H. H. W. and 11. Bolus. 1906. Some observations on Welwitschia 



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p. 162—163.) 

 Pearson, R. S. 1905. A note on the germination of teak and other seeds. 



(Indian Forester. XXXI. 16. p. 635-638.) 



iV. Biologie. 



Cf. II. Lindinger; XV. Blatter. 



Schaffner, J. H. 1905. Key to the Ohio dogwoods in the winter condition. 

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Schaffner, M. 1905. Free-floating plants of Ohio. (Ohio Nat. VI. p. 

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Ugolini, U. 1905. Contributo alla florula arboricola della Lombardia e 

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Ugolini, U. 1905. Saggio di studi sulla vita iemale delle plante. (Com- 

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V. Varietäten, Descendenz, Hybriden. 



Buttenshaw, W. R. 1905. The importance of selection in vegetative pro- 



pagation. (Bull, miscell. Inform. bot. Dept. Trinidad. 1905. 48. p. 



248—250.) 

 Dahl, Fr. 1906. Die physiologische Zuchtwahl im weiteren Sinne. (Biol. 



Cbl. XXVI. 1 p. 3-15. 2 Abb.) 

 Denis, F. 1906. Curiosities of hybridisation. (Orchid Review. XIV. 157. 



p. 28.) 

 Doncaster, L. 1905. On the inheritance of Coat-colour in rats. (Proc. 



Cambridge phil. Soc. XIII. p. 215—228.) 

 Fruwirth, C. 1906. Beiträge zu den Grundlagen der Züchtung einiger 



landwirthschaftlicher Kulturpflanzen. (Natw. Zschr. Land- u. Forstw. 



IV. 1. p. 50—55 und 2. p. 65—84.) 

 Harrison Shall, G. 1904 [received 1906]. Place-constants for Aster prenan. 



thoides. (Chicago, 1904.) 

 Harwood, W. S. 1905. New creations in plant life: an authoritative account 



of the life and work of Luther Burbank. (New York and London, Mac- 



millan & Co. 1905. 358 pp. 49 ill. and portrait.) 

 Kossmann, R. 1906. Die Erhaltung günstiger V^arianten. (Biol. Cbl. 



XXVI. 1. p. 15-18.) 

 Massart, J. 1905. La base materielle de l'heridite et de la variabilite, 



d'apres les dernieres recherches des cytologistes. (Bull. Soc. roy. Sc. med. 



et nat Bruxelles. LXIII. 10. p. 312-320.) 

 Saunders, E. R. 1905. Mendel's Theory of Heredity. (South-Eastern Nat. 



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