1. ('08). A study of reduction in Oenothera rubrinervis;Gates;Bot. Gaz.,1908
2. and Nesta Thomas ('14). A cytological study of Oenothera mut. lata and Oe. mut. semilata in relation to mutation;Gates;Quar. Journ. Micr. Sci.,1914
3. ('11). Cytologische Untersuchungen einiger Bastarde von Oenothera gigas;Geerts;Bericht. Deutsch. Bot. Ges.,1911
4. ('12). Triploid mutants in Oenothera;Lutz;Biol. Centralbl.,1912
5. MacDougal , D. T. A. M. Vail G. H. Shull J. K. Small Mutants and hybrids of the Oenotheras 1905 57