Micros por on (mi-kro's po-ron)

A genus of the cla Fungi and order Ascomycetes, having spores within asci and consisting of a mycelium, they being parasitic on man. M. Audouini. A species detected by Gruby (1843) in tinea capitis. It has numerous wavy filaments and very minute sporules, the latter forming a whitish matter on the skin and hair. The organism grows best on maltose agar and slowly liquefies gelatin. It produces an obstinate form of tinea capitis. M. flavescens. A species producing squamous patches on the neck of children. M. furfur, M. Mala ezii. A species from 4 to 6 M in diameter, the fungus of pityriasis versicolor. It invades the superficial part of the skin and consists of a mycelium composed of short, slender, variously sized, twisted, wavy, or angular filaments cro ing each other in all directions, and containing, especially about the joints, small oval spores which evince a marked tendency to aggregate into groups or grapelike clusters. M. lanosum. A species producing tinea capitis, barbae, or corp or is. M. Macfadyein. See Trichophyton. M. Masoni. Mycelium with bent and globular spores. Grows on agar and produces tinea nigris. M. mentagrophytes. The mentagrophyte of Gruby; a species (by Saccardo referred to the genus Sporotrichum) causing mentagra. It occurs in the follicle of the hair, and forms densely woven ma es of hyphae with numberle , nearly spherical, conidia from 6 to 12 vin diameter. It causes trichophytic sycosis and tinea corp or is with suppurative foci in man. M. minimum. A species producing tinea corp or is. M. pubescens. A species causing tinea capitis. M. tropieum. Thick mycelial threads with constrictions and double-contoured spores. The parasite does not grow on artificial media. It is the cause of tinea flava. [Gr., mikros, small, + sporos, a seed.]