1. Bensaude, Mathilde. 1918. “Recherches sur le Cycle évolutif et la Sexualité chez les Basidiomycetes.” Nemours.
2. Blackman, V. H. andWelsford, E. J. “The Development of the Perithecium ofPolystigma rubrum D. C.”Ann. Bot. Vol. xxvi. No. ciii.
3. Blakeslee, A. F. 1904 “Sexual Reproduction in the Mucorineae.”Proc. Amer. Acad. of Arts and Sciences, Vol. xl. No. 4.
4. -, 1913. “Differentiation of Sex in Thallus, Gametophyte and Sporophyte.”Bot Gaz. Vol. ii.
5. -, 1913, “Conjugation in the Heterogamic GenusZygorhynchus.” Myc. Centralbl. Bd. ii.