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SUMMARY
Lycoperdon acuminatum develops similarly to other investigated species of Lycoperdaceae. The fruit bodies arise from a poorly developed rhizomorph whose branches penetrate for some distance between the cells of the bark.
The exoperidium is formed early, and results from a radial arrangement of peripheral hyphae. It soon becomes made up of a very loose outer fringe, and a pseudoparenchymatous inner part.
The endoperidium results from a tangential rearrangement of hyphae just within the exoperidium; this is the outermost layer in completely mature fruit bodies.
The gleba is differentiated as in other species; the first cavities appear toward the apex, but gradually the entire interior including the sterile basal part is used up. The subhymenium and the trama are very poorly formed.
The greater number of threads of capillitium are formed in the layer of permanent pseudoparenchyma just inside of the endoperidium; relatively few threads are scattered through the gleba.
A comparison of these developmental characters with those of other species which have been studied indicate that it is most closely related to Lycoperdon Wrightii.