Oligonema schweinitzii

Oligonema schweinitzii (Berk.) G. W. Martin,
Mycologia 39: 460. 1947.
Trichia nitens Libert, PI. Crypt. Ard. Fasc. 3, 277. 1834. Not T. nitens Pers. 1796. Physarum Schweinitzii Berk. Grevillea 2: 66. 1873. Oligonema nitens Rost. Monog. 291. 1875. Trichia Kickxii Rost. Monog. Append. 40. 1876. Trichia bavarica Thum. Myc. Univ. 1497. 1879.
Trichia pusilla Schroet. Krypt.-Fl. Schles. 3»: 1 14. 1885. Not T. pusilla Poir. 1808. Oligonema bavaricum Balf. & Berl.; A. Berl. in Sacc. Syll. Fung. 7: 437. 1888. Cornuvia nitens Rost.; Lister, Mycet. 173, as syn. 1894.
Sporangia bright yellow, shining, sessile, irregularly globose, 0.1-0.5 mm. in diameter, usually crowded in dense clusters and often superimposed; peridium thin, translucent, nearly smooth, with faint fan-like markings; elaters usually sparse, 3-4 u in diameter, simple or branched, with faint, usually dextrorse, spiral markings, otherwise nearly smooth, sometimes with occasional rings, the apices often apiculate; spores irregularly and often incompletely reticulate, the meshes mostly large, the bands often broad and pitted, 12-17 y. in diameter; Plasmodium yellow.
Type locality: Europe.
Habitat: Rotten wood in moist places; occasionally on moist soil.
Distribution: New England and southern Canada to Florida and California; Europe; North Africa.