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 Add this item to the list   Mucor hiemalis Wehmer
   
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Page number:86 
Description type:Non-original description 
Description:Mucor hiemalis Wehmer
Colony characteristics. Colonies (MEA) expanding, greyish-ochraceous.
Microscopy. Sporangiophores hyaline, up to 15 mm high, up to 14 ?m wide, erect, unbranched at first, later sparingly branched. Sporangia yellowish at first, becoming dark brown, up to 80 ?m diam, with diffluent membranes; columellae ellipsoidal, spherical when young, up to 38 x 30 ?m. Sporangiospores ellipsoidal, sometimes flattened at one side, 5.7-8.7 x 2.7-5.4 ?m, smooth-walled. Oidia present in substrate hyphae.
Zygospores. Zygospores up to 100 ?m diam, roughened with long spines, blackish-brown. Suspensors equal or nearly equal. Heterothallic.
Physiology. Maximum growth temperature 30°C. Nitrate negative. Mostly no thiamin required.
Pathogenicity. BSL-1. This species was isolated in a case of zygomycosis (Neame & Rayner, 1960). Recently it was also reported as the causative agent of a primary cutaneous mycosis in an otherwise healthy girl (Prevoo et al., 1991). Subcutaneous and cutaneous cases were published by Costa et al. (1990) and Wang et al. (1998) as M. hiemalis f. luteus, a slightly different taxon which, however, sometimes produces zygospores in mating (Schipper, 1973).
References. Schipper (1973), Domsch et al. (1980), Samson et al. (1996).
Nomenclature. Mucor hiemalis Wehmer - Annls Mycol. 1: 37, 1902.
Mucor luteus Linnemann - Beitr. Fl. Mucor. Marb., 1936 ? Mucor hiemalis Wehmer f. luteus (Linnemann) Schipper - Stud. Mycol. 4: 33, 1973.
 
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