[9][10] Its rate of growth and production of fruiting bodies can be manipulated by the presence or absence of light.

[12][3] The secondary appendage, a feature which is commonly seen in coprophilous fungi, is thought to help with attachment to plant material.

[13] Under heavy-water conditions, swelling of the hyaline sheathe and activation of the secondary appendage allows for optimal attachment to surfaces.

[13] The cycle of successional colonization of P. setosa involves the ingestion and excretion of the fungus by herbivorous animals.

[15] The recoil of the apical ring back to its original shape following distortion amplifies the velocity at which spores exit the ascus.

[10] The favoured carbon source for P. setosa is the excrement of herbivorous animals, due to the broken-down plant material and abundance of Nitrogen.

[12] Triangularia setosa has been documented within many different countries including Canada, Germany, Spain, Brazil, Australia, the United Kingdom, and Ireland.

[3][9][16][17][14] The fungus itself favours the colonization of lagomorphs over ruminants, but surprisingly can be found on material passed by both types of digestion.

[4] This shows an ability to withstand digestion from several hours up to several days, as lagomorphs routinely ingest their own fecal matter.

[4] The smaller percentage of colonization in ruminants and horses may be due to competition with other types of cophriphilous fungi, who are not able to withstand the longer digestion times of lagomorphs.