Systematics and Evolution, Part A The Mycota

Fig. 3.11Morphology of Achlyaceae and Saprolegnia-
ceae.(a–i) Drawings of genera inAchlyaceae.Empty
sporangium ofAchlya irregularisshowing terminal

spore ball (a) and oogonium ofA. heterosexualis,with

diclinous antheridium and eccentric oospores contain-

ing single lipid droplet and larger crescent-shaped

Systematics of the Straminipila: Labyrinthulomycota, Hyphochytriomycota, and Oomycota 63