Disciotis venosa
A sac fungus found in April; Disciotis venosa grows
from the ground.
Asci (ascospore producing cells) of Disciotis venosa.
Disciotis venosa sometimes exhibits oil droplets outside the
ascospore as seen in first picture.  
Fungus of the Month at
Tom Volk's Fungi

See Disciotis venosa at
MushroomExpert.Com