Gilbertella persicaria (E.D. Eddy) Hesselt.

Zygospores globose to subglobose, compressed between suspensors, with coarse projections. Sporophores hyaline, becoming pale brown with age, simple, sometimes branched, erect, curved below the sporangium. Sporangia spherical, initially white-yellowish, turning light to dark brown or black when mature; wall persistent, covered with spines, separating at maturity into two equal halves; columellae obvoid to globose, with a distinct basal collar. Sporangiospores variable in shape, mainly ellipsoid, hyaline, smooth, one-celled, with hyaline filiform appendages at both ends.