Name: Tolypocladium longisegmentatum
Author: (Ginns) C.A. Quandt, Kepler & Spatafora
Citation: IMA Fungus 5: 126 (2014)
Deprecated Synonyms: Elaphocordyceps longisegmentis (Ginns) G.H. Sung, J.M. Sung & Spatafora
Stromata solitary, usually simple occasionally bifurcating, capitate, growing from the fruiting body of Elaphomyces species. Stipe 13-14 mm wide, 130 mm in length, grayish yellow to deep yellow, glabrous, and hollow. Fertile region broadly rounded, 13 mm in diameter, olive brown to dark brown, abruptly enlarged where attached to the stipe.
Perithecia immersed, ellipsoid, hyaline, 500-300 um in length.
Asci cylindrical to narrowly ellipsoid, up to 440 × 10-15 um, with a prominent apical cap.
Ascospores filiform, smooth, hyaline, separating into partspores. Partspores long, 40-65 × 4-5 um, truncated.
Host or Substrate:
On truffles of the genus Elaphomyces [Ascomycota]
Canada, Japan, United States of America
Elaphocordyceps capitata and E. longisegmentis can be differentiated mainly by the length of their partspores: E. longisegmentis has longer partspores.
Sung et al., 2007. Phylogenetic classification of Cordyceps and the clavicipitaceous fungi. Studies in Mycology, 57(1), p.5-59.
Alisha Owensby http://cordyceps.us/node/5701