Ad´nate (adnatus, grown to, pp. adnasci, to grow to), growing into or fast to; of gills, e. g. closely attached to the stem.

Adnexed´ (adnexus, connected), of gills attached to the stem, but not adnate to it.

Adpressed´ (adpressus, pp. of adprimere, < ad, to; premere, to press), pressed in close contact but not adherent.

Adventi´tious (adventitius, prop. adventicius, coming from abroad, < adventus, pp. of advenire, come to, arrive at), appearing casually, or in an abnormal or unusual position or place.

Æru´ginose, Æru´ginous (æruginosus, < ærugo, rust of copper), verdigris-green.

Affin´ity (affinita(t-)s, < affinis, neighboring, related by marriage), morphological relationship; resemblance in general plan of structure.

Agam´ic, Ag´amous (Gr—unmarried + ic), sexless.

Ag´amogen´esis (Gr—unmarried, + Gr—production), non-sexual reproduction.

Agam´ospore (Gr—unmarried, + spora, spore), spore formed without fertilization.

Ag´aric (agaricum, a kind of tree-fungus used as tinder, named, according to Dioscorides, from the country of the Agari in Sarmatia, where this fungus abounded), any gill-bearing fungus; formerly applied only to members of the genus Agaricus.