How to Identify Geastraceae

Key Identification Features

• The stalk becomes visible after the pseudoparenchymatous layer dries; it is short but distinct, measuring 1–2.
• The peristome, a clearly defined region surrounding the spore sac's opening, is distinctly delimited, and ranges from disc-like to more or less conical in shape.
• The apiculus, the part of the spore that attaches to the sterigma at the end of a basidium, is distinct and has radiating ridge-like processes.
• 20 in) long, and has 20–32 distinct ridges.

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