(EXOTHERA MU'I’. LATA AND (E. MUT. SEMILATA. 565 
Gates, R. R., 1908a. — “A Study of Reduction in (Enothera rubri- 
nervis,” ‘ Bot. Gaz.,’ xlvi, pp. 1-34, pis. i-iii. 
1908b. — “The Chromosomes of (Enothera,'’ ‘Science,’ N.S., xxvii, 
pp. 193-195. 
1909a. — “ The Stature and Chromosomes of (Enothera gigas 
De Yries,” ‘Arch. f. Zellforsch.,’ iii, pp. 525-552. 
1909b. — “ Further Studies of (Enotheran Cytology,” ‘Science,’ 
xxix, p. 269. 
1910. — “The Chromosomes of (Enothera mutants and 
Hybrids,” ‘ Proc. Seventh Internat. Zool. Congress,’ 1907, pp. 4. 
1911a. — “Pollen Formation in (Enothera gigas,” ‘Ann. 
Bot.,’ XXV, pp. 909-940, pis. Ixvii-lxxx. 
1911b. — “ Studies on the Variability and Heritability of Pigmen- 
tation in (Enothera,” ‘ Zeitsch. f. ind. Abst-. u. Yererbungslehre,” 
iv, pp. 337-372, pi. vi, figs. 5, tables 11. 
191‘2a. — “Parallel Mutations in (Enothera biennis,” ‘Nature,’ 
Ixxxix, pp. 659-660. 
1912b. — “ Somatic Mitoses in (Enothera,” ‘ Ann. Bot.,’ xxvi, pp. 
993-1910, pi. Ixxxvi. 
1913a. — “A Contribution to a Knowledge of the Mutating (Eno- 
theras,” ‘ Trans. Linnean Soc.,’ 2nd ser.. Botany, viii, pt. i, pp. 
1-67, pis. i-vi. 
1913b. — “ Tetraploid Mutants and Chromosome Mechanisms,” 
‘ Biol. Centralbl.,’ xxxiii, pp. 92-99, 113-150, figs. 7. 
1914. — “ Breeding Experiments which show that Hybridization 
and Mutation are Independent Phenomena,” ‘ Zeitsch. f. Abst-. 
u. A^ererbungslehre,’ xi, pp. 70, figs. 25. 
Geerts, J. M., 1907.—“ Uber die Zahl der Chromosomen von (Enothera 
Lama rckiana,” ‘ Ber. dent. bot. Gesells.,’ xxv, pp. 191-195, 
pi. vi. 
1911. — “ Cytologische Untersuchungen einiger Bastarde von 
(Enothera gigas,” ‘Ber. dent. bot. Gesells.,’ xxix, pp. 160-166, 
pis. viii. 
Heribert-Nilsson, N., 1912. — “Die Ahiriabilitat der (Enothera 
Lamarckiana und das Problem der Mutation,” ‘ Zeitsch. f. 
Abst-. 11 . Yererbungslehre,’ viii, pp. 89-231, pis. iii-v, figs. 36. 
Lutz, Anne M., 1907. — “ A Preliminary Note on the Chromosomes of 
(Enothera Lamarckiana and one of its Mutants, O . gigas," 
‘ Science,’ xxvi, pp. 151-152, figs. 2. 
1908. — “ Chromosomes of the Somatic Cells of the (Enotheras,’' 
‘ Science,’ n.s., xxvii, p. 335. 
