An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Agricultural Research Service

U.S. Department of Agriculture

Secondary Links

My Profile
ARS Home
Sign In

Main menu

Home >> Taxonomic Tree Viewer

Central Taxonomic Thesaurus

Taxon Search

Taxon:

Display authors

Match on whole words

Display full tree below family

Display species with subgenera

Display only taxa linked to occurrences

Organism

Fungi

Ascomycota

Lecanoromycetes

Pertusariales

Agyriaceae

Agyrium

Agyrium rufum

Footer menu

Home
Sitemap

Social Media

Facebook
Twitter
YouTube

Government Links

AskUSDA
Policies and Links
Plain Writing
FOIA
Accessibility Statement
Privacy Policy
Non-Discrimination Statement
Civil Rights Policy
Information Quality
Agricultural Research Service
USDA.gov
USA.gov
WhiteHouse.gov

Sign up for ARS News updates

Your email address