Ophiocordyceps communis Hywel-Jones & Samson

Taxonomy
Authority: 
Hywel-Jones & Samson
Citation: 
Studies in Mycology 57: 38.
Classification: 
Ophiocordyceps, Ophiocordycipitaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Type Specimen: 
NHJ 10673
Type Locality: 
Gong Giao Nature Trail, Khao Yai National Park, Thailand.
Morphology
Stroma: 

Stromata filiform, 50–100 mm below ground, 300–600 µm wide, whitish-grey, 70–130 mm emerging above leaf litter, 600–1000 µm wide, lower 30–40 mm of above-ground portion usually hirsute with sterile, dematiaceous (yellow-brown) hairs becoming smooth, silver-brown to grey along terminal fertile (anamorph) part of ca 90 mm.

 
Perithecia: 

Perithecia superficial subterminal, emerging through grey anamorph, tightly packed around the stipe, 285–675 × 195–390 µm.

 
Asci: 

Asci with stout cap, 8-spored, filiform, 215–250 × 15 µm.

 
Ascospores: 

Ascospores whole, stout, lightly pigmented (100–)120–150(–180) × 5–6 µm.

 
Anamorph
Genus: 
Hirsutella or Hymenostilbe (An intermediate form between these two genera)
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: 38.
Ecology
Host or Substrate: 

Adult of termites surrounded by loose, coarse white mycelium.

Known Distribution: 
Thailand
Notes
Specimens Examined: 

Thailand. Khao Yai National Park, Gong Giao Nature Trail, 13 June 2000, NHJ 10673 (Holotype), NHJ 10674, NHJ 10675, NHJ 10676, NHJ 10677.

Commentary: 

Most collections of O. communis were from Khao Yai National Park with the type locality (Gon Giao Nature Trail) regularly having epizootics containing (in any one season) several hundred stromata over 20 × 20 metre area. All collections of the species were from adult termites Although surveys were made over an eighteen-year period from the far north of Thailand to the far south and from sea level to over 2500 metres, O. communis is only known from these three sites in central Thailand below 800 metres elevation.

References

Sung et al., 2007. Phylogenetic classification of Cordyceps and the clavicipitaceous fungi. Studies in Mycology, 57(1), p.5-59.

Page Author: 
Gi-Ho Sung