Saprolegnia litoralis

Saprolegnia litoralis Coker, Saproleg. 54. 1923
Growth about as in Saprolegnia ferax, more vigorous, extensive and irregular than in Saprolegnia delica f hyphae reaching a length of 1-1.5 cm. on a mushroom-grub; sporangia not abundant, the early ones nearly cylindric, or more often irregular in thickness, usually curved, repeatedly proliferating, the later ones more irregular and often pointed; spores 10-12 fi in diameter; gemmae abundant, spheric, pyriform, or clavate, often in chains, the terminal one often with an elongate papilla; oogonia plentiful as a rule, about 35-80 m in diameter, mostly terminal on the main hyphae, some (usually appearing later) on short lateral branches, spheric, or if borne on the ends of the main threads usually oval, the latter frequently with a slender, more or less lengthy terminal extension, which when short may be included in the cavity of the oogonium, but which is often extended into a thread 2.8-3 /x thick, thus making the oogonium intercalary, furnished with rather few, very conspicuous and usually large pits, up to 11 /x across; eggs centric, large and dark, 1—20, mostly 2-6 in an oogonium, 20-40 m in diameter, most about 30-33 /z, often elliptic from pressure; antheridia on every oogonium (one to several), androgynous, frequently, when the oogonium is on a short stalk, arising from immediately below it, also diclinous.
Type locality: Southport, North Carolina. Habitat: Fresh water and soil. Distribution: North Carolina; also in Europe.