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Microsporum ferrugineum


Microsporum ferrugineum is a causative agent of Tinea capitis.

(Information from @ 2005)



Microsporum ferrugineum Mold Pictures

Microsporum ferrugineum microscopic morphology

(Image Courtesy of @ 2005)

Microscopic morphology of Microsporum ferrugineum

No microconidia or macroconidia are produced, only irregular branching hyphae with prominent cross walls ("bamboo" hyphae) and occasional to numerous chlamydoconidia occur. The so - called "bamboo" hyphae are a characteristic of this species.


Microsporum ferrugineum colony morphology

(Image Courtesy of @ 2005)


Culture of Microsporum ferrugineum on mycobiotic agar showing a waxy, glabrous, convoluted thallus with a cream to buff colored surface and no reverse pigment.




Microsporum ferrugineum is a cosmopolitan fungus which is considered as an anthropophilic dermatophyte.  It is commonly encountered in Africa, East Asia, and Eastern Europe.


Pathogenicity and Health Effects
Microsporum ferrugineum is a frequent causative agent of tinea infection of the scalp in human adolescents in certain prevalent regions.   


Macroscopic Appearance

      Growth rate is slow to very slow and diameter of colonies ranges from 0.5 to 1 cm. incubated on Sabouraud dextrose agar at 25C for 7 days;

      There are two types colonies depending on their physical appearance;

      The first type of colony is heaped, wrinkled, glabrous, and commonly with furrows and folds, and the surface colony color is yellow to rust and the reverse is observed with dull orange pigmentation; and

      The second type of colony is flat, with texture of leathery to downy, spreading, and white in color.


Microscopic Appearance

      Septate and sterile hyphae is produced by Microsporum ferrugineum which is commonly deformed and irregularly branched showing a bamboo like appearance;

      Hyper - segmented, long, straight, and thick walled hyphae are frequently present; and

      Microsporum ferrugineum do not produce macroconidia nor microconidia, however, spindle shaped macroconidia may be produced on rice grains or in diluted Sabouraud agar.

The mycological information gathered and
organized in this extensive research on different
Pathogenic Molds was sourced out from the list
of informative websites and reference below:

A Clinical Laboratory Handbook: Identifying Filamentous
by St. Germain, Guy and R. Summerbell.

Browse these Webpages for more
Microsporum species information:

[Microsporum audouinii]
[Microsporum canis]
[Microsporum ferrugineum]
[Microsporum gallinae]
[Microsporum gypseum]
[Microsporum nanum]
[Microsporum persicolor]


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