Colony cotton, initially white verse, becoming light gray, yellowish reverse, occupying the entire end of the petri dish (9 cm diam and 1,5 cm in height) in 5 days, at 25 °C, in MEA. Rhizoids well branched. Sporangiophores curved when young, becoming erect in maturity, rising from the substrate, hyaline, with slightly encrusted wall, sympodially branched, presenting a slight constriction below the sporangium, up to 1,5 mm in length and 16 μm diam. Sporangia brown, wall deliquescent and slightly echinulate, globose to subglobose, up to 60 (–90) μm in diam. Columellae hyaline, wall slightly encrusted, subglobose to conical, hemispheric, some dorsoventrally flattened (12–) 15–35 (–50) × (15–) 20–33 (–40) μm; collar evident. Pedicels supporting the sporangioles usually short and curved, wall smooth or slightly encrusted. Sporangiola multispored frequent (15–) 20–40 (–45) μm, rare unispored, up to 20 μm in diam, echinulated, globose to subglobose and brown. Columellae of sporangiola hyaline, conical for flattened, wall slightly encrusted, (5–) 8–18 (–25) μm. Sporangiospores globose to subglobose, hyaline, smooth-walled, (7–) 10–17 (–22) μm. Giant cells absent. Zygospores not observed. Probably heterothalic.
Commonly isolated from soil, litter and herbivore dung. In Brazil, this species have been moslty recorded in the Subtropical/Tropical Moist Lowland Forest and Subtropical/Tropical Moist Montane Forest, with some reports in Savanna domais.
In Brazil, this species is moslty recorded in the Atlantic Forest, a hotspot with some reports in Cerrado em Caatinga domains.
The species, even occurring in all biomes, has a fragmented distribution in Brazil. Studies about its population distribution are needed.
Backusella spp. have the capacity to produce Beta-carotene (PAPP et al., 2009), polyunsaturated fatty acids (ex .: B. recurva), from sugar cane molasses as a carbon source (LI et al., 2008), in gamma linoleic acid biosynthesis (KLEMPOVA et al., 2013).
Benny, G.L., and R. K. Benjamin. 1975. Observations on Thamnidiaceae (Mucorales). New taxa, new combinations, and notes on selected species. Aliso 8:301-351.