1. Processi degenerative negli ovuli in seguito ad impedita fecondazione;Cappelletti;Nuovo Gior. Bot. Italiano,1931
2. Note on a case of doubling of embryo sac, pollen tube, and embryo;Compton;Ann. Bot.,1912
3. The structure and development of flowers in Ficus carica;Condit;Hilgardia,1932
4. The development of the embryo sac and embryo of Agrostemma githago;Cook;Ohio Nat.,1903
5. Notes on the embryology of the Caryophyllaceae;Cook;Ohio Nat.,1909