Downy white to salmon-pink colony: reverse tan to salmon-pink.
2 weeks
Microscopic Identification
Steriie hyphae; terminal chiamydoconidia, favic chandeliers, and pectinate bodies: macroconidia rarely seen (bizarre shaped if seen):
microconidia rare or absent.
Microsporum audouinii
Colony usually membranous with feathery perphery, center of colony white to buff over orange-yellow: lemon-yellow or yelow-orange apron and reverse.
1 week
Thick-walled, spindle-shaped, multiseptate, rough-wailed macroconidia, some with a
curved tip: microconidia rarely seen.
M. canis
Velvety to granular witha wine-rеd
reverse
1week
Thick-walled, rough-walled macroconidia with cellular compartments, no true cross walls:
microconidia are teardrop-shaped.
M. cookei complex
Flat to velvety with a white surface with pink tinge: red reverse with diffuslble pigment
1 week
Smooth to rough-walled macroconidia; thickest
cell often at apex; drop-shaped microconidia
M. gallinae
Cinnamon-colored, powdery colony: reverse light tan
1 week
Thick-walled, rough. eliplical, multiseptate macroconidia: microconidia few or absent.
M. gypseum
Center of colony tends to be folded and is khaki green; periphery is yellow: reverse yellowish-brown with observable folds.
1 week
Macroconidia: large, smooth-walled, multiseрtate, clavate, and borne singly or in clusters
of two or three: microconidia not formed by
this species.
Epidermophyton floccosum
Different colonial types: white, granular, and flutty vaneties: осcаsional lightyellow periphery in younger cultures: reverse buff to reddish-brown.
7-10 days
Microscopic Identification
Many round to globose microconidia, most
commonly borne in grapelike clusters or laterally along the hyphae: spiral hyphae in 30%
of isolates; macroconidia are thin-walled, smooth. club-shaped, and multiseptate: numerous or rare, depending on strain.
Trichophyton mentagrophytes complex
Colonial types vary from white downy to pink granular, rugal folds are comon; reverse yellow when colony is young, but wine/red color commony develops with age.
2 weeks
Microconidia usually teerdrop-shaped, most commonly bome along sides of the hyphae:
macroconidia usually absent but when present are smooth, thin-walled, and pencilshaped.
Trichophyton rubrum
irregularly heaped. smooth, white to cream colony with radiating groovеs; reverse white.
2-3 weeks
Hyphae usually sterile: many antler-type hyphae seen in favic chandeliers.
T. schoenleinii
White. tan to yellow or rust suedeke
to powdery: wrinkded with heaped or sunken center: reverse yellow to tan to rust red
7-14 days
Micreconidia are teardrop-or ciub-shaped with flat bottoms: vary in size but usually larger
than other dermatophytes: macroconidia rare (balloon forms found when present).
T. tonsurans
Glabrous to velvety white colonies, rare strains produce yellow-brown color: rugal foids with tendency to skin into agar surtade
2-3 weeks
Microconidia rare, large, and teardrop-shaped when seen: macroconidia extremely rare but
fomm characterstic rat-tail types when seen many chlamydoconidla seen in chains, parlicularly when colony is incubated at 37 C.
T. verrucosum
Port wine to deep violet colony. may be heaped or flat with waxy glabrous surface: pigment may be lost on subculture.
2-3 weeks
Branched, tortuous, sterile hyphaе:
chlamydoconidia commonly aligned in chains.
T. violaceum
