Gutierrezia genus --- aster subfamily 3.2

​Aster 3.1 (Genus A to F) -- Aster 3.2 (Genus G to O) -- Aster 3.3 (Genus P to R) -- Aster 3.4 (Genus S to Z)  

threadleaf snakeweed (Gutierrezia microcephala)  -- in September -- White Sands National Monument, NM   NM-S

broom snakeweed (Gutierrezia sarothrae) -- in August -- Orchard Cove Trail, Lory State Park, CO     CO-LSP

broom snakeweed (Gutierrezia sarothrae) -- in August -- Soapstone Prairie, Fort Collins Natural Area, CO