British Wildlife is the leading natural history magazine in the UK, providing essential reading for both enthusiast and professional naturalists and wildlife conservationists. Published eight times a year, British Wildlife bridges the gap between popular writing and scientific literature through a combination of long-form articles, regular columns and reports, book reviews and letters.
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Variability in Mucor hiemalis is demonstrated by mating experiments and morphological studies of a great number of strains. It is concluded that M. hiemalis, M. luteus, M. lausannensis, M. silvaticus, M. corticolus and M. vallesiacus ought to be classified in a single variable species: M. hiemalis.
Accepted formae are: M. hiemalis f. hiemalis, M. hiemalis f. silvaticus, M. hiemalis f. corticolus and M. hiemalis f. luteus. M. genevensis is the homothallic counterpart of M. hiemalis. Descriptions and figures of the species and formae and a key are given.