verbena genus --- vervain family
bigbract verbena (Verbena bracteata) -- in May -- Orchard Cove Trail, Lory State Park, CO blue & purple CO-LSP
bigbract verbena (Verbena bracteata) -- in July -- Sportsman Lake Road, southeastern Wyoming WY-S
bigbract verbena (Verbena bracteata) -- in August -- Orchard Cove Trail, Lory State Park, CO
swamp verbena (Verbena hastata) -- in August -- Lory State Park, CO blue & purple CO-LSP
swamp verbena (Verbena hastata) -- in August -- Tanglewood, Fort Collins Natural Area, CO
MacDougal vervain (Verbena macdougalii) -- in September -- Cloudcroft, Lincoln National Forest, NM blue & purple NM-S