Other Characters in Oenothera Lamarckiana, 471 



But these results agree so closely with the facts re- 

 lated here, that there can be little doubt that my general 

 conclusion applies to Oenothera as well. 



I have only carried out a few direct ex]:)eriments 

 bearing on the inheritance of the abnormalities in Oeno- 

 thera Lamarckiana itself. They relate to tricotyly and 

 variegated leaves, and will be described in suljsequent 

 sections. I have however collected a fair number of ob- 

 servations which favor the argument for this inheritance 

 of latency. A series of abnormalities have occurred in 

 the plants in the field at Hilversum, as well as in my 

 own cultures; some of them seldom, some of them often; 

 but all of them in such a way as to leave no doubt as to 

 their heritability.-^ 



The only exception to this Is afforded by the cases of 

 virescence, which changes the different parts of the flow- 

 ers into small green bracts. I never found it on the 

 Oenotheras at Hilversum, and only on one example in 

 my own cultures. This was a biennial dwarf which 

 flowered in the summer of 1890, and came very near 

 bearing no seed at all on account of this abnormality. 

 I regard this malformation as due to the attack of some 



aiifzusuchen, ibid., 1894, Vol. XII, p. 25 ; Uehcr halbc Galton-Curvcn, 

 ibid., 1894, Vol. XII, p. 197; Monographie dcr Zwangsdrchungen in 

 Pringsh. Jahrb. f. wiss. Bot., Vol. XXIII, p. 14 and Over dc crfclyk- 

 heid van fasciatien, Kruidkundig Jaarboek, Gent, 1894, IV Jaargang, 

 p. 72. 



* For the inheritance of monstrosities see : Erf dyke Moustrosi- 

 teiten, Kruidkundig Jaarboek Dodonaea, 1897, p. 62 ; Over de crfelyk- 

 heid van Synfisen, ibid., 1895, p. 129; Sur la pcriodicite des anomalies 

 dans les plantes monstrueuses, Archiv. Neerl. d. Sc. exactes et nat., 

 Serie II, Tome III, p. 371 ; Ueber die Abhangigkeit dcr Faseiation 

 vom Alter bei zweij'dhrigen PHanzen, Botan. Cenlralbl., Vol. yy, 1899; 

 On Biastrepsis in its Relation to Cultivation, Annals of Botany, 1899; 

 Vol. XIII, No. 51, p. 395; Sur la culture des nionstruosites, Comptes 

 rendus de I'Acad. d. Sc, Paris, Janv. 1899; Sur la culture des fascia- 

 tions des especes annuelles et bisannuelles; Revue gcnerale de Bo- 

 tanique, T. XI, 1899, p. 136; Erndhrung und Zuchtivahl, Biol. Cen- 

 tralblat, Bd. XX, No. 6, 1900, p. 193. 



