Physarum nicaraguense T. Macbr. 1893

Physarum nicaraguense Macbr. Bull. Nat. Hist. Univ
Iowa 2: 382. 1893.
Physarum reniforme G. Lister in Lister, Mycet. ed. 2. 72. 1911. Probably not Tilmadoche reniformis Massee, 1892.
Sporangia gregarious, stalked, multilobate or compound-contorted, obconic below, grayishwhite, ribbed with calcareous thickenings, the individual sporangia 0.3-0.6 mm. in diameter, the clusters up to 2 mm. across, their total height 0.8-1.5 mm.; stalk short, up to half the total height, fluted, dark; hypothallus black, reticulate; capillitium dense, white, the nodes large, angular, massed at the center, forming a pseudocolumella, the connecting threads short, hyaline; spores black in mass, violaceous-brown by transmitted light, closely and finely warted, 1 1—12 p in diameter.
Type locality: Ometipe, Nicaragua.
Habitat: Dead wood.
Distribution: Nicaragua; Puerto Rico; Trinidad; Ceylon; Japan; Caroline Islands.