Lisa West, associate professor of English, will present a lecture, “The Dangers of Botanical Knowledge: Women, Witches, Collectors,” at the Viaduct Gallery of the Des Moines Social Club on Saturday, Oct. 15, at 1 p.m. The lecture is one of a series of events connected to Fatal Flora, a photography exhibit by Molly Wood, held at the Viaduct Gallery Oct. 7–30.