Ar´cuate (arcuatus, pp. arcuare, to bend like a bow, < arcus, a bow), bow-shaped.
Arena´ceous, Arena´rious, Are´nose (arenaceus, harenaceus, sandy, < arena, harena, sand), sandy; growing in sandy places.
Are´olate (areola, dim. of area, a plot), divided into little areas or patches.
Argilla´ceous (argillaceus < argilla, white clay), resembling or like clay.
Ar´id (aridus, dry, < arere, be dry), dry.
Aris´tate (aristatus < arista, awn or beard), having a pointed beard-like process as in barley.
Armil´la (armilla, a bracelet, armlet, hoop, ring, dim. prob. of armus, shoulder), a plaited frill hanging from the apex of the stem.
Arte´riole (arteriola, dim. of arteria, artery), a small artery.
Artic´ulate (articulatus, pp. of articulare, divide into joints or members, < articulus, a joint, etc.), jointed.
Ascend´ing (ad, to, + scandere, to climb), inclining or growing upward; applied to a lamella where its edge forms a line ascending in the direction from the margin of pileus toward the apex of the stipe; as in conical shaped pilei; applied to the partial veil when in the young stage its stem-attachment is below the level of its marginal one; in this case a ring formed from it is called inferior.