This species originally was classified as a member of Sclerocystis, and then was transferred to Glomus by Almeida and Schenck (1989). Within Glomus, spores form singly as well as in a continuum of increasingly complex sporocarps (aggregates, spores around a central plexus, spores with a central plexus and stipe). Glomus clavispora is positioned within this continuum.

Sporocarps extracted from 6-mo-old pot culture		Spores from holotype material (mounted in Melzer's reagent)

REFERENCES

Almeida, R. T. and N. C. Schenck. 1990. A revision of the genus Sclerocystis (Glomaceae, Glomales). Mycologia 82:703-714.