The life cycle of the sub/tropical soil fungus Allomyces macrogynus. Development of the tiny tree-like thalli. The exchange of nuclear phases is tied to alternation of generations, the diploid sporophyte reproduces asexually with planospores, the identical haploid gametophyte forms male and female gametes in unequal sizes. Fertilization is anisogamitous. Simple graphics explain the total cycle.