amarus
Bitter

ambigua, ambiguum, ambiguus
Intermediate between two genera, changeable

amblyospora
With dull or blunted spores

ambrosii
F. Ambrosi, Italian (ca.1800-1900)

ambusta
Scorched

ameides
Gloomy

amentacea
Pertaining to catkins

americana
From America

americanum, americanus
Of America

amethystea
Pale lavender color, amethyst

amethysteo-occidentalis
Violet (amethyst) & western

amethysteus
Pale lavender color, amethyst

amethystina
Pale lavender color, amethyst

amethystinoides
Resembling amethystina

amethystinus
Somewhat violet

amianthinum, amiantinum
Unspotted

amianthinus, amiantinus
Incorruptible, incontaminate

amica
Pertaining to a friend

amici
Giovanni Battista. Amici (1786-1868), Italian mathematician

amicosus
Very friendly

amicta
Clothed

amicus
Pertaining to a friend

ammiratii
Joseph Ammirati, American mycologist

ammophila, ammophilus
Sand loving

amoena
Pleasant

amoenatus
Made pleasant or cheerful

amoenicolor
Pleasant color

amoenolens
Fragrant or sweet smelling

amoenus
Pleasant, cheerful

amorphus
Misshapen

ampliporus
With enlarged pores

amurceus
Pertaining to the dregs of olive oil?

amygdalina, amygdalinus
Almond colored

amygdalospora
With almond-shaped spores

Amylocystis
Amyloid cysts

amyloidea, amyloideus
Amyloid (blue reaction with Melzer's solution)

amylosporus
With amyloid spores

amythystina
Amethyst, purple

ananas
Plant genus for pineapple (scales on cap)

ananus
Plant genus for pineapple (scales on cap)