PLANT NOTES FOR 1913, ETC. 



365 



(Willd.), with 14 vars. ; M. piperita (M. viridis x aquatica), with 5 

 vars., including M. citrata ; M. verticillata {aquatica x arvensis), 

 with 14 vars. ; M. gentilis (M. arvensis x viridis), with 3 vars., 

 including cardiaca ; M. rubra (M. verticillata x viridis), with var. 

 Wirtgeniana ; M. dalmatica Tausch (M. arvensis x longifolia), with 

 8 vars. ; and M. carinthiaca (M. arvensis x rotundi folia), with 

 5 vars. 



(Enothera of the S. Lancashire Coast. J. A. Wheldon. 

 Lane. Naturalist, Sep. 1913. States that the date on the original 

 drawing of CE. biennis in Eng. Bot. is given as 1805. (E. Lamarc- 

 kiana was distributed through this Club in 1905 by Mr C. Bailey. 



(Enothera. Tetraploid Mutants and Chromosome Mechan 

 isms. R. R. Gates in Biol. Centralblatt 92, 1913. 



(Enothera, the Mutation of. T. J. Stomps in Biol. 

 Centralblatt. Band xxxii., n. 9, pp. 521-535, 1913. 



(Enothera. The Problem of the Origin of (E. Lamarckiana, 

 by B. Moore Davis. New Phyt. 233-241, 1913. Reprint. (E. 

 Lamarckiana is suggested to be a form of CE. grandiflora [Solan der] 

 in Aiton Hort. Kew. ii., 2, 1789. The author distinguishes CE. biennis 

 and CE. Lamarckiana by the following characters : — 



Biennis. 

 Stem without red papillae. 

 Petals 2 — 2.5 cm. long. 

 Stigma well below the tips of the 



anthers. 

 Sepals normally green. 



Lamarckiana. 

 Stem with red papillae. 

 Petals 4—4.5 cm. long. 

 Stigma 5 — 7 mm. above the tips 



of the anthers. 

 Sepals sometimes streaked with 



red. 



The (E. biennis referred to is the Dutch plant. It must be borne 

 in mind that some races close to CE. biennis have the stem colouration 

 of Lamarckiana, and some small-flowered races of Lamarckiana have 

 petals about the size of biennis, and the stigma is in a lower position, 

 thus approaching Lamarckiana. 



Genetical Studies in (Enothera. Bradley Moore Davis. 

 American Naturalist 449-571, 1913. Describes hybrids of biennis 

 and Lamarckiana. 



