Lookalikes to rule out
Morel
cautionTrue morels are hollow throughout and their caps join the stem at the lower edge.
Half-free morel
cautionMorchella punctipes caps attach halfway down and the stem is hollow.
False Morel
toxicGyromitra has brain-like lobes and a chambered interior.
Identification
The cap is wrinkled and brown and attached only at the very top of the stem, so it hangs like a thimble over a finger. Slice it lengthwise: the stem is filled with cottony pith. It fruits early in spring near cottonwoods and aspens.
Why it matters
Older guides list it as edible with caution, but it has caused poisonings, and it teaches a key morel check: slice every specimen top to bottom.
Memorable fact
Its spores are among the largest of any mushroom, visible as distinct grains under a basic microscope.
