Stephanocystis crassipes

Thallus perennial, coarse, bushy, (0.5)- 1-2(-3) m high, differentiating into coneshaped holdfast, stipe and erect axis; yellowish-brown to dark brown. Erect axis coarse, cylindrical. Branching alternate, in all directions. Primary branches to 1.5 m long, cylindrical or flattened, fusiform and thickened (swollen) in basal portion. Phylloids coarse, leathery, linear-lanceolate, to linear. Vesicles, receptacles and small phylloids develop in the upper part of thallus. Vesicles elongated, solitary or in 2-(3-5) series of tightly connected vesicles. Growing on lower intertidal to subtidal.

Temperate latitudes of Pacific Ocean (Japan, Korea, Russia).