Truffle Genus: Gastrosporium
 Gastrosporium simplex basidiospore |
Kingdom: Fungi Phylum: Basidiomycota Order: Lycoperdales Family: Gastrosporiaceae |
Spore Characters
Surface: Ornamentation warty, 0.2 µm tall.
Shape and Size: Longitudinally symmetrical, ellipsoid, 4-5.5 x 3-4.2 µm including ornamentation; sterigmal attachment indistinct.
Wall: Single layer beneath the ornamentation, 0.5 µm thick.
Color in Water: Pale yellow
Melzer's Reaction: No reaction.
Comments: Spores of Gastrosporium simplex are most similar to the sequestrate Geastraceae from which they differ by their ellipsoid rather than globose or subglobose spores.
View photos of Gastrosporium spores
Sporocarp Characters
Shape and Size: up to 1 cm in diameter, globose to subglobose, usually with conspicuous rhizomorphs attached at the base.
Peridium: Smooth, off-white to white, not bruising.
Gleba: Powdery, initially white then pale brown to yellow-olive-brown, without sterile tissue
Odor: Not reported.
View photos of Gastrosporium sporocarps