Am´phigen (Gr—around, + Gr—produce), a thallogen; a name applied to a cryptogam which increases by development of cellular tissue in all directions and not at the summit of a distinct axis. See [Acrogen].

Amphig´enous (Gr—about; Gr—to beget), not confined to one surface, growing all around; e. g., hymenium of Clavaria.

Amyg´daline (amygdalinus, < amygdala, almond), resembling the almond.

Amyla´ceous (amylum, starch, + aceous), composed of, containing or resembling starch.

Am´ylum (Gr—starch), starch.

Anal´ogy (Gr—equality of ratios, proportion), superficial or general resemblance, without structural agreement; physiologically or functionally alike, morphologically unlike.

Anas´tomosing (Gr—an opening, outlet, discharge), united by running together irregularly; intercommunication of vessels, lines, gills or veins with each other.

Angiocar´pous (Gr—a capsule, case, vessel of any kind), having the hymenium developed in a closed receptacle.

Angus´tate (angustatus, pp. of angustere, straiten, narrow, < angustus, narrow), narrow.

An´nual (annualis, a year old, < annus, a year), completing growth in one year or season.