Keywords: Urnula.JPG en Urnula craterium a three stages in development of cup b ascus and paraphyses c hairs from cup d one spore A memoir of the late Lewis David von Schweinitz P D with a sketch of his scientific labours http //books google com/books id poEVAAAAYAAJ hl pl Lewis David von Schweinitz 1835 public domain because of age PD-old Urnula craterium |