Cordyceps
The following two species of Cordyceps are parasites of
the deer truffle,
Elaphomyces granulatus.
Cordyceps capitata
See Cordyceps capitata at
George Barron's Website on Fungi
Cordyceps ophioglossoides
Fungus of the Month at
Tom Volk's Fungi
Also see Joey Spatafora's website
Cordyceps
INDIANA MUSHROOMS