676 E. Schiemann: Entstehung der Arten, Variation usw. 1915 und 191(3. [4(> 



770. Willis, J. ('. The evolution of species in Ceylon, witli 

 reference to tlie dying ont of species. (Ann. of Bot. 30, 191G, p. 1 

 bis 23, 2 Textfig.) - Ref. Bot. Ctbl. 132, 1916, p. 235. 



771. Willis, J. C. Tlie dispersa 1 of organisms as illiistrated 

 by tbe flora ol Ceylon and New Zealand. (Proc. Linn. S'oc. London 

 1915/16, 1916, p. 13-14.) 



772. Willis, J. r. Furtber deductions from tbe figures of 

 rarity of tbe Ceylon flora. (Rep. 85. ^leet. Brit. Ass. Adv. Sc. Mancbester 

 1915. London 1916, p. 726.) 



773. Worsdell, W. C. Tbe origin and nieaning of medullary 

 (intraxylary) pbloem in tbe stems af dicotyledons I. Cucurbitaceae. 

 (Ann. of Bot. 29, 1915, p. 567-590.) 



Nachtrag. 



774. Anastasia, G. E. Nuove ricercbe intorno alla filogenesi 

 della Nicotiana Tabacum L. (Rendic. R. Accad. Lincei, cl. Sc, ser. 5a, XXIV, 

 1. Sem., Roma 1915. p. 1146-1150.) 



775. Auonyniiis. A dwarf mutant in maize. (Jouru. of Heredity 

 VI, 1915, p. 98, mit 1 Textfig.) — Vgl. unter ., Variation, Descendenz usw.". 



746. Bariott, H. H. Systematic studies on Oenothera. V. Oe^ 

 Robinsonii and Oe. cleistantha spp. nov. (Rhodora XVII, 1915, p. 41—44, 

 mit 1 Taf.) 



777. Baur,E. Regeneration und Transplantation impflauzen- 

 reicb. (Kultur d. Gegenwart III, IV. 1, 1915, p. 378-404, 11 Textfig.) 



778. Beguinot, A. Ricercbe culturali siille variazioni delle 

 plante. IV. Di un naovo ibrido nelle Lycrtn/s del gruppo Me/andryum 

 6 considerazioni sulla genetica della stesse. (Atti Acc. Ven.-Tient.- 

 Istr., ser. 3a, VIII, Padova 1915, p. 155-176, 1 tav.) 



779. Blotsch, K. Primula acaulis x elatior Muret in Württem- 

 berg. (Allg. Bot. Zeitscbr. XXI, 1915, p. 129.) 



780. Cobau, R. Sulla variabilita del numero dei sepali e dei 

 petali di Ranuncülus Ficaria L. a. typicus Fiori in Italia. (Malpigbia 

 XXVI, 1914, p. 247-259.) 



781. Fernald, M. L. An albino Viola rostrata. (Rbodora XVII, 

 1915, p. 180.) 



782. Moss, C. E. Notes on Britisb plants. IV. Bninella laciniata 

 X vulgaris. (Journ. of Bot. LIII, 1915, p. 8-13.) - Ref. in ,, Morphologie 

 und Systematik der Sipbonogamen" 1915, Nr. 1092. 



783. Pirotta, R. Un caso interessante di variazione nel fiore 

 di una Iris. (Rendic. Acc. Lincei, cl. Sc, ser. 5a, XXIV, Roma 1915, p. 897 

 bis 898.) 



784. Robertson, W. R. B. Cbromosome Studies. III. Inequalities. 

 and Deficiencies in Homologous Cbromosomes: Tbeir Bearing 

 lipon Synapsis and tbe Loss of Unit Cbaracters. (Journ. Morph. 

 XXVI. 1915.) - Siebe ,, Vererbungslehre". 



785. Solms-Laubach, H. Graf zu. Zierpflanzen. (Handwörterbuch 

 der Naturwissenschaften X, 1915, p. 929 — 949.) — Ref. in ,, Morphologie und. 

 Systematik der Sipbonogamen" 1915, Nr. 224. 



