This section is from the book "A Practitioner's Handbook Of Materia Medica And Therapeutics", by Thos. S. Blair. Also available from Amazon: A Practitioner's handbook of Materia Medica and Therapeutics.
Ustilago Maydis, Corn Smut. The contention is made that corn ergot has similar actions upon the central nervous and capillary systems to the ergot of rye, but produces its action more regularly and safely and has the advantages of rye ergot in labor and post-partum hemorrhage without the disadvantages. A more conservative view is that in chronic uterine hemorrhages; and when there is uterine inertia before delivery, it is superior to rye ergot, but not in active hemorrhage, or for the indications in small doses. (See Ergot.) A few makers of fluidextracts list ustilago. (F.e. or ec. tr., 5 to 30 I..)