Saprolegnia hypogyna

Saprolegnia hypogyna Pringsh. Jahrb. Wiss. Bot. 9: 191. 1873
Saprolegnia intermedia Maurizio, Jahrb. Wiss. Bot. 29: 97. 1896.
Hyphae delicate, straight; primary sporangia repeatedly proliferating from within; oogonia terminal and mostly round or pear-shaped, or intercalary and then broadly barrelshaped, often two or more in a row, the wall smooth, moderately thick, with few large pits; eggs usually about 5-10 (1-40), centric as in S. monoica; antheridial branches absent; antheridia usually present in the form of a cylindric or clavate-cylindric cell cut off just below the oogonium; antheridial tubes usually entering the oogonia through the basal wall, often branched and not rarely absent; intercalary oogonia when single frequently having an antheridium cut off at each end with antheridial tubes present or absent; a few oogonia remaining without antheridia even to full maturity of the eggs. (Description adapted from De Bary, Bot. Zeit.
46: 615, 616. 1888.)
Type locality: Germany. Habitat: Fresh water. Distribution: Michigan; also in Europe.