van Overeem, Formen m. abweichend. Chromosomenzahl b. Oenothera. 53 



(4) Aiton, W., Hortus Kewensis: A catalogue of the plants cultivated in 



the Royal Botanical Garden at Kew. London 1789. (S.) 

 (4a) Allioni, Carlo, Flora Pedemontana. 3 Vol. 1789. (S.) 

 (4b) Alpin o, Prospero, De planus exoticis libri duo. 344 pp. 1627. (S.) 



(5) Andree, A., Flora der Umgegend von Münder. 1875. 58 S. (G.) 



(6) Andrews, F. M., The botanical garden of the University of Amsterdam. 



(Plant World. XIII. 1910. p. 53—56.) 



(7) — Twin hybrids (laeta and velutina) and their anatomical distinctions. 



(Bot. Gazette. L. 1910. p. 193—201.) (A.) 



(8) Anonymus, Vierde lijst van nieuwe Indigenen, die na Jan. 1891 in 



Nederland ontdekt zijn. (Ned. Kruidk. Arch. Ser. VI. 5. p. 502.) (G.) 



(9) Arndt, C, Verzeichnis der in der Umgegend von Bützow bisher be- 



obachteten wildwachsenden Gefäßpflanzen und der häufigsten Kultur- 

 gewächse. 2. Auflage. X. 93 S. Bützow 1884. (G) 



(10) Ascherson, P., Bericht über die Exkursion nach Oderberg i. M. am 



19. Mai 1875. (Verhandl. d. bot. Ver. d. Prov. Brandenburg. 1875. 

 S. 14—19.) (G.) 

 (10a) — Flora v. Brandenburg. Bd. L, 1. 1860. (S.) 



(11) — Seltenere Pflanzen der Mark Brandenburg. (Verhandl. d. bot. Ver. 



d. Prov. Brandenburg. XIX. 1877. S. 145—146.) (G.) 



(12) — Übersicht der Pteridophyten und Siphonogamen Helgolands. (Wissensch. 



Meeresunters., herausgeg. v. d. Komm. z. Unters, d. deutschen Meere 

 in Kiel und der Biol. Anstalt auf Helgoland. N. F. IV. 1900. 

 S. 91—140.) (G.) 



(13) Atkinson, G. F., Is the biennial Habit of Oenothera Races constant 



in their native Localities ? (Science. N. Ser. XXXVII. p. 716—717.) (Ph.) 



(14) — Segregation of „Unit Characters" in the Zygote of Oenothera with twin 



and triplet Hybrids in the first Generation. (Science. N. Ser. XXXIX. 

 1914. p. 834—835.) (E.) 



(15) — Sorting and blending of ,,Unit Characters" in the Zygote öf Oenothera 



with twin and triplet Hybrids in the first Generation. (Zeitschr. f. ind. 

 Abst.- u. Vererb. -Lehre. XVI. 1916. p. 193—238.) (E.) 



(16) — Quadruple Hybrids in the F x Generation from Oenothera nutans and 



Oenothera pycnocarpa, with the F. 2 Generations and Back- and Inter- 

 crosses. (Genetics. IL 1917. p. 213—260.) (E.) 



(17) — Twin Hybrids from Crosses of Oenothera Lamarckiana and franciscana 



with Oenothera pycnocarpa in the F, and F 2 . (Proc. of the Americ. 

 Phüos. Society. LVII. 1918. p. 130—143.) (E.) 



(18) B a b c o c k , E. B., The role of factor mutations in evolution. (Americ. 



Naturalist. LH. 1918. p. 116—128.) (E.) 



(19) B a g u e t , C, Annotations nouvelles ä la flora de la province de Brabant. 



(Bullet, de la Soc. roy. de bot. de Belgique. XV. 1876. p. 118—143.) (G.) 



(20) Baichere, E., Note sur la Vegetation des environs de Carcassone. 



(Bullet, de la Soc. bot. de France. 1888. p. XXVIII— XXX.) (G.) 



(21) Bailey, W. W., and Co 11 ins, J. F., A List of Plants found 



on Block Island. (Bullet, of the Torrey bot. Club. XX. 1893. 

 p. 231—239.) (G.) 



(22) Bailey, Charles, On the adventitious Vegetation of the Sandhills of 



St. Annc's-on-the-Sea, North Lancashire. (Mem. a. Proc. Manchester 

 Lit. et Phil. Soc. XLVII. 1902. 10 pp. 3 pl.) 



