Physarum gilkeyanum H. C. Gilbert 1932

Physarum gilkeyanum H. C. Gilbert; Peck & Gilbert,
Am. Jour. Bot. 19: 133. 1932.
Sporangia sessile, gregarious, globose or broadly obovate on a narrowed base, 0.4—0.8 mm. in diameter, 0.7-0.9 mm. tall, grayishwhite ; peridium hyaline, usually covered with a thin, reticulately wrinkled coat of lime, irregularly dehiscent; capillitium dense, rigid, fine-meshed, persistent, the nodes few, white, small and rounded at the top, long, branching, badhamioid at the base; spores dark violaceous-brown in mass, violet-brown by transmitted light, coarsely warted, 9-11 p in diameter.
Type locality: Lebanon, Oregon.
Habitat: Leaf mold.
Distribution: Known only from the type locality.