Hygroph´anous (Gr—moist; Gr—to show), of a watery appearance when moist and opaque when dry.
Hygroscop´ic, having the property of absorbing moisture from the atmosphere; sensitive to moisture.
Hyme´nium (hymenial, belonging to the hymenium; Gr—a membrane), the fruit-bearing surface; e. g. covering intimately each side of the gills of an Agaric.
Hy´menomyce´tes (Gr—a mushroom, + Gr—a membrane), a group of Basidiomycetes having the hymenium on the free, exposed surface of the sporophore.
Hy´menophore, Hymenoph´orum (Gr—a membrane, + to bear), the structure which bears the hymenium; in Agarics e. g. the under surface of the pileus to which the gills are attached.
Hy´pha (pl. Hy´phæ), the elementary filament or thread of a fungus; a cylindric thread-like branched body developing by apical growth, and usually becoming transversely septate.
Hy´phal, of or pertaining to the hypha.
Hypocrater´iform (Gr—the stand of a crater, + forma, form), having the shape of a cylindrical cup the margin of which turns outward; salver-shaped.
Hypogæ´ous, Hypoge´al, Hypoge´ous (hypogæous, underground), subterranean; forming below the surface of the ground.
Hypog´enous (Gr—under, + produced, + ous), growing on the under surface.