MORPHOLOGIC CLASSIFICATION OF
MEDICALLY IMPORTANT FUNGI

MORPHOLOGY ORGANISM
Monomorphic yeasts and yeast-like organisms
Pseudohyphae with blastoconidia Candida spp.
Hansenula
Saccharomyces
Yeastlike cells only
(usually no hyphae or pseudohyphae)
Cryptococcus
Hansenula
Malassezia
Prototheca
Rhodotorula
Saccharomyces
Sporobolomyces
Torulopsis
Ustilago
Hyphae and arthroconidia or annelloconidia Blastoschizomyces
Geotrichum
Trichosporon
Thermally dimorphic fungi


Blastomyces dermatitidis
Histoplasma capsulatum
Paracoccidioides brasiliensis
Penicillium marneffei
Sporothrix schenckii
Thermally monomorphic molds
White, cream, or light gray surface; non-pigmented reverse.
With microconidia or macroconidia
Acremonium
Beauveria
Chrysosporium
Emmonsia
Fusarium
Graphium
Microsporum
Pseudallescheria
Sepedonium
Stachybotry
Trichophyton
Verticillium
Having sporangia or sporangiola Absidia
Apophysomyces
Basidiobolus
Conidiobolus
Cunninghamella
Mucor
Rhizomucor
Rhizopus
Saksenaea
Having arthroconidia Coccidioides
Geotrichum
Having only hyphae with chlamydoconidia Microsporum
Tricophyton
White, cream, beige, or light gray surface;
yellow, orange, or reddish reverse
Acremonium
Chaetomium
Microsporum
Trichophyton
White, cream, beige, or light gray surface;
red to purple reverse
Microsporum
Penicillium
Trichophyton
White, cream, beige, or light gray surface;
brown reverse
Chaetomium
Chrysosporium
Cokeromyces
Emmonsia
Madurella
Microsporum
Scopulariopsis
Sporotrichum
Trichophyton
White, cream, beige, or light gray surface;
black reverse
Chaetomium
Graphium
Nigrospora
Phoma
Pseudallescheria
Scedosporium
Trichophyton
Tan to brown surface;
having small conidia
Aspergillus
Botrytis
Chrysosporium
Cladosporium
Dactylaria
Emmonsia
Paecilomyces
Phialophora
Pseudallescheria
Scopulariopsis
Sporotrichum
Trichophyton
Verticillium
Having large conidia or sporangia Alternaria
Apophysomyces
Basidiobolus
Bipolaris
Botrytis
Cokeromyces
Conidiobolus
Curvularia
Epicoccum
Epidermophyton
Fusarium
Microsporum
Rhizomucor
Rhizopus
Stemphylium
Trichophyton
Ulocladium
Having miscellaneous microscopic morphology Chaetomium
Coccidioides
Madurella
Phoma
Ustilago
Yellow to orange surface Aspergillus
Chrysosporium
Epicoccum
Epidermophyton
Microsporum
Monilia
Penicillium
Sepedonium
Sporotrichum
Trichophyton
Trichothecium
Verticillius
Pink to violet surface Acremonium
Aspergillus
Beauveria
Chrysosporium
Fusarium
Gliocladium
Microsporum
Monilia
Paecilomyces
Sporotrichum
Trichophyton
Trichothecium
Verticillium
Green surface; light reverse Aspergillus
Epidermophyton
Gliocladium
Penicillium
Trichoderma
Verticillium
Dark gray or black surface; light reverse Aspergillus
Syncephalastrum
Green, dark gray, or black surface; dark reverse
having small conidia
Aureobasidium
Botrytis
Cladosporium
Exophiala
Fonsecaea
Phaeoannellomyces
Phialophora
Pseudallescheria
Scedosporium
Wangiella
Xylohypha
Having large conidia Alternaria
Bipolaris
Curvularia
Dactylaria
Epicoccum
Helminthosporium
Nigrospora
Pithomyces
Stachybotrys
Stemphylium
Ulocladium
Having only hyphae
(with or without chlamydoconidia)
Madurella
Piedraia
Having large fruiting bodies Chaetomium
Phoma

REFERENCES

1. Murray, P.R. 1996. ASM Pocket Guide To Clinical Microbiology, American Society of Microbiology Press, Washington, D.C.

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