A second family Helvellaceae contains three important genera, Morchella, Gyromitra, and Helvetia, in which are the largest and most highly prized spore-sac fungi known. They are distinguished from the earth-tongues by the cap-like form of the spore body or ascoma, but especially by the character of the spore-sac, which opens by a little lid instead of by a simple pore.

Cir-ci'-nans Vi'-tel-li'-na Gy'-ro-mi'-tra

MIt'-ru-la Mor-keT-la Hel-vel-13

* This species is also described under the names Geoglossum irregulare and Geoglossian vitellinnm.

Helvella elastica, Buff. Reduced. See page I42.

Helvella lacunosa, Holm. Reduced See page 143-.

Mitrula vitellina, sacc, var irregularis, Pk. (edible). Reduced.