Rhizophydites M. Krings et C.J. Harper, gen. nov.

MycoBank number: MB 834563; Index Fungorum number: IF 834563; Facesoffungi number: FoF;

Diagnosis. Simple eucarpic fossil, monocentric thalli; epibiotic zoosporangia, variable in size and shape, much less than 40 mm in diameter, with one or several discharge openings, inoperculate; endobiotic rhizoidal system, arising from a single site on the zoosporangium; subsporangial swelling giving off one or two rhizoidal axes may be present; thalli occur singly or in planar assemblages, sometimes also in multiples extending from a common site on substrate or in clusters comprising individuals in different phases of development, some growing from substrate and others from adjacent zoosporangia; new zoosporangia may develop in- side the old zoosporangia.

Type species. Rhizophydites matryoshkae M. Krings et C.J. Harper (this article).