Grape-ferns are seedless vascular plants of the genus Botrychium which are in some classifications segregated in a separate genus, Botrypus. They're small, with fleshy roots, reproducing by spores shed into the air. They differ from the moonworts (Botrychium s.s.) in having at least some sterile fronds (all fronds in Botrychium are spore-bearing), and in the fronds being bi- or tri-pinnate (in Botrychium s.s. are single pinnate, or rarely bipinnate). Botrypus has recently been shown to be parap… (More on Grape-fern)