Color is fairly uniform among spores in a population.
Mostly globose, subglobose, occasionally irregular. Sloughs on many spores, particularly those collected from the field or stored pot culture inoculum. With slight separation in some broken spores, it can be seen, but it rarely separates completely from the spore wall. We cannot determine if this layer originates with the spore wall or independent of the spore wall because of problems with limits of detection. Folds produced by gw1 often can be deceiving and erroneously suggest additional flexible inner walls.