• Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Mucor inaequisporus Dade

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Scientific name
Mucor inaequisporus
Common names
IUCN Specialist Group
Chytrid, Zygomycete, Downy Mildew and Slime Mould
Incertae sedis
Assessment status
Proposed by
Leslie Freitas
Comments etc.
Leslie Freitas

Assessment Notes

Taxonomic notes

Colonies golden yellow, reverse yellow, growing rapidly on MEA (9 cm diam.) after four days at 25°C. Sporangiophores yellow, erect, undulating, curved and constricted next to the sporangia, with yellow droplets inside, simple or with long or short sympodial branches, with encrusted wall, 12–45 μm in diam. Sporangia yellow, globose and subglobose, with a vitreous aspect, 60–170 μm diam, wall echinulate, deliquescent in mature sporangia and persistent in young sporangia. Columella, yellow, highly variable in shape, pyriform, some with constriction, conical, oblong, ellipsoidal, obovoid, subglobose with yellow granules inside, with prominent collars, smooth-walled, 33.5–110 (–130) × 4–90 (–110) μm. Sporangiospores yellowish-green with granular contents, variable in shape and size, elliptical, 5–13 (21.5) × 3–11 (–16) μm, globose and subglobose, 7–18 μm diam., some irregular, 12–30 × 5–12 (–16) μm, smooth-walled. Chlamydospores and zygosporangia not observed.

Why suggested for a Global Red List Assessment?

We suggest this species to be categorized as Least Concern (LC) due to the several records worldwide.

Geographic range

The species in known in 7 countries. In Brazil, it is known in 2 of the 26 states.

Population and Trends

There are about 19 occurrences of this species in GBIF.

Population Trend:

Habitat and Ecology

To the best of our knowledge, this species has been reported from soil, from the rhizosphere of root knot nematode host plants in Iran, from fruits of the hog plum, Spondias mombin L., from Theobroma cacao L., Artocarpus glaucus Blume, Flacourtia inermis Roxb., Musa paradisiaca L., Diospyros kaki L., Bouea macrophylla Buwga, Syzygium cumini L., and Diospyros kaki.


In Brazil, this species is recorded in the Atlantic Forest.

Small-holder farmingAgro-industry farmingSmall-holder plantations

Conservation Actions

Research needed

Use and Trade


Schipper MAA (1978) On certain species of Mucor with a key to all accepted species. Studies in Mycology, 17: 1–52.

Santiago ALCM de A, Rodrigues A, Canedo EM, Filho ER (2013) Taxonomic studies of Mucor inaequisporus, isolated for the first time in South America. Mycotaxon 124: 219–229.

Country occurrence

Regional Population and Trends

Country Trend Redlisted