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Asteraceae

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Ambrosia trifida L.

Gordon C. Tucker
Ambrosia trifida L.

Gordon C. Tucker
Ambrosia trifida L.

Gordon C. Tucker
Anaphalis margaritacea (L.) Benth.

Kimberly Elkin
Anaphalis margaritacea (L.) Benth.

Greg Pollard
Anaphalis margaritacea (L.) Benth.

Gordon C. Tucker
Anaphalis margaritacea (L.) Benth.

Gordon C. Tucker and Edwin H. Horning
Anaphalis margaritacea (L.) Benth.

Gordon C. Tucker and Edwin H. Horning
Antennaria Gaertn.

D. E. Elmaer
Antennaria Gaertn.

Gordon C. Tucker
Antennaria neglecta Greene

Bart Moore
Antennaria plantaginifolia Hook.

M. Rice
Antennaria plantaginifolia Hook.

Hiram F. Thut
Antennaria plantaginifolia Hook.

Gordon C. Tucker
Antennaria plantaginifolia Hook.

Gordon C. Tucker
Anthemis arvensis L.

Gordon C. Tucker
Anthemis arvensis L.

Gordon C. Tucker
Anthemis arvensis L.

Gordon C. Tucker and Edwin H. Horning
Anthemis arvensis L.

Tad M. Zebryk
Anthemis cotula L.

Hiram F. Thut
Anthemis cotula L.

Gordon C. Tucker
Arctium L.

Gordon C. Tucker
Arnica louiseana Farr

Kimberly Elkin
Arnica unalaschcensis Less.

Kimberly A. Elkin
Arnoglossum plantagineum Raf.

Gordon C. Tucker