Elaphocordyceps ophioglossoides (Ehrh. : Fr.) G.H. Sung, J.M. Sung & Spatafora

Taxonomy
Authority: 
(Ehrh. : Fr.) G.H. Sung, J.M. Sung & Spatafora
Citation: 
Studies in Mycology 57: 37.
Synonymy: 

Sphaeria ophioglossoides Ehrh., in Pers., Comment de Fung. Clavaef. p. 12. 1797 : Fries, Syst. Mycol. 2: 324. 1823.
Torrubia ophioglossoides (Ehrh. : Fr.) Tul., Sel. Fung. Carpol. 3: 20. 1865.  
Cordyceps ophioglossoides (Ehrh. : Fr.) Link, Handbuck zur Erkennung der nutzbarsten und am häu?gsten vorkommenden Gewächse 3: 347. 1833.

Classification: 
Elaphocordyceps, Ophiocordycipitaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Morphology
Stroma: 

Stromata solitary or several, clavate to cylindrical, simple or rarely bifurcating, on a truffle genus Elaphomyces, often connected to Elaphomyces through rhizomorph. Fertile area fusiform to clavate, brown-colored with olivaceous tint, often turning black with age or drying, 10-45 x 3-9 mm, differentiated from stipe. Stipe cylindrial, pale brown with olivaceous tint 30-140 x 1.5 x 5 mm.

 

 
Perithecia: 

Perithecia crowded, immersed, ovoid, 600-700 x 260-370 um.

Asci: 

Asci 8-spored, cylindrical, 280-450 x 5-7 um, possessing a prominent cap (4.5-5 um).

 
Ascospores: 

Ascospores cylindrical, multiseptate, disarticulated into partspores. Partspores hyaline, truncated, 2.5-3.5 x 1.5-2 um. 

 
Anamorph
Genus: 
Verticillium-like
Citation: 
Sung, G.-H., Hywel-Jones, N.L., Sung, J.-M., Luangsa-ard, J.J., Shrestha, B., Spatafora, J.W., 2007, Studies in Mycology 57: 37.
Ecology
Host or Substrate: 

On the members of a truffle genus Elaphomyces (Eurotiales, Eurotiomycetes, Pezizomycotina, Ascomycota).  It has been reported on Elaphomyces granulatus and E. variegatus.

Known Distribution: 
Austria, Canada, Denmark, Germany, Japan, Korea, Netherlands, Russia, Switzerland, United States of America
Notes
Specimens Examined: 

OSC 106405

Commentary: 

Elaphocordyceps ophioglossoides is most similar to E. paradoxa in its morphological characters (e.g., color and texture of stromata and stipe, shape of stromata, microscopic characters of ascospores). While the host of E. ophioglossoides is a species of Elaphomyces (a genus of false truffle in Eurotiomycetes), Elaphocordyceps paradoxa is a pathogen of cicadae. This dramatic difference in host affilations between these two morphological similar species have presented a dynamic hypotheses of interkindom host shifts in E. ophioglossoides and other species (e.g., E. paradoxa, E. subsessilis) in Elaphocordyceps (Nikoh & Futkatsu 2000, Sung et al 2007).

References
Page Author: 
Gi-Ho Sung