Figs. 157-162.  Chytriomyces willoughbyi (Willoughby) Karling (Karling, 1968).

Fig. 157.  Stages in the development of a thallus in which the incipient sporangium is budding out of the apex of the zoospore cyst.

Fig. 158.  Stages in the development of a thallus in which the zoospore cyst is enlarging to form the sporangium.

Fig. 159.  Spherical (2.2-3 µm diam.) and amoeboid zoospores with single, anterior globule.

Fig. 160.  Empty sporangia.

Fig. 161.  Mature resting spore with fairly extensive branched rhizoids.

Fig. 162.  Germination of resting spore.