anatina
Pertaining to a duck

ancilis
Two headed

andersonii
Named after Anderson?

androsaceus
Resembling a tiny herb or plant, an unidentified sea-plant

androscarceus
Greek word for unknown marine plant

Anellaria
A small ring

angelesianus
Pertaining to Angeles (Los Angeles?)

angolensis
Angola, Africa

angulosus, angulatus
Angular

angustatus
Small, narrow

angusticeps
Narrow head

angustifolius
Narrow leaves (gills)

angustispora, angustisporum
Narrow spored

angustissima
Very narrow

annosa, annosum, annosus
Full of years

annularis
Pertaining to a ring

annulata, annulatus
Having a ring

annulosulfurea
Sulphur-yellow ring

anomala, anomalus
Anomalous, not typical, not even

anserinus
Pertaining to or resembling a goose

anthocephala
Pertaining to a flower head

Anthopeziza
Flower Peziza

anthracina, anthracinus
Pertaining to coal (black)

Anthracobia
Charcoal

anthracophila, anthracophilum
Loving charcoal

Anthracophyllum
Charcoal leaves (gills)

Anthurus
Flower

antipus
Opposite foot

aphthosus
Pertaining to the thrush

Aphyllophorales
Without gills

apicrea, apicreus
Not bitter

apiculata, apiculatus
With a little point, short projection on end of spore

Apiosporina
Pointed spore

apium
Pertaining to celery

aporos
Having spores without pores

appalachiensis, applachianensis
Of the Appalachian Mountains

appendiculata, appendiculatus
With a small appendage, root like appendage

applanatum, applanatus
Flattened or horizontally extended

applicatus
Attached to

approximans
Near neighbor