[3] B. piluliferum has been found worldwide in a wide range of habitats such as animal dung and vegetation.

[2] The culture produced underdeveloped perithecia typical of those seen in the genus Chaetomium but was not connected to any known species at the time.

[2] A dried type specimen of the teleomorph was studied and found to be similar to C. murorum, a species described by Corda in 1837.

[4] This fungus contained narrower ascospores, longer hairs of ascomata, and was absent of aleurioconidia and an anamorph.

[4] The colonies start off as white aerial mycelium which can become a yellowish-beige colour by the subsequent production of brown, rough-walled sterile setae.

[4] The pale brown ascospores are ellipsoidal (or football-shaped) and contain one germ pore that is roughly 13–16 x 8–10.5 μm.

[4] Mating behaviour of the fungus is unknown because single-spore cultures lose the ability to produce ascomata.

[4] The teleomorph C. piluliferum is made up of colonies containing brown hyphae with rough and bumpy hairs.

[7] C. piluliferum ascomata are superficial and spherical or obovate (oval-shaped with a narrow base, like a light bulb.

[7] The asci are obovate (light bulb-shaped) or broadly clavate (baseball bat-shaped), have a short stalk and contain 8 spores.

[11] In comparison to other species like Trichoderma aureoviride, that has been found to be very susceptible to parasites, B. piluliferum shows greater resistance to mycoparasites such as Pythium oligandrum.

[4] It has also been isolated from stems of Urtica dioica, hay, rhizospheres of groundnut, rice and wheat, paper products, and mouldy textiles,[4] as well as in the seeds of chili pepper.