Browse photos by Harry Thomas:
Achillea
Anaphalis
Antennaria
Arctium
Arctium minus – 3 photos
Balsamorhiza
Brickellia
Centaurea
Centaurea diffusa – 2 photos
Chaenactis
Cichorium
Cichorium intybus – 3 photos
Cirsium
Cirsium arvense – 1 photo
Cirsium vulgare – 3 photos
Erigeron
Erigeron pumilus – 1 photo
Gaillardia
Grindelia
Matricaria
Tanacetum
Tanacetum vulgare – 2 photos
Tragopogon
Tragopogon dubius – 3 photos