Madder family (Rubiaceae)
stickywilly (Galium aparine) -- in May - Timber Trail, Lory State Park, CO white & cream
stickywilly (Galium aparine) -- in May -- Pingree Park, Roosevelt National Forest, CO white & cream
stickywilly (Galium aparine) -- in April -- Bobcat Ridge, Fort Collins Natural Area, CO
northern bedstraw (Galium boreale) -- in June -- Well Gulch Nature Trail, Lory State Park, CO white & cream
northern bedstraw (Galium boreale) -- in June -- Bridal Veil Falls Trail, RMNP, CO
shrubby bedstraw (Galium multiflorum) -- in June -- Steens Mountain Wilderness Area, OR white & cream
field madder (Galium sherardia) -- in April -- Natchez Trace Parkway, southern Tennessee red & pink
fragrant bedstraw (Galium triflorum) -- in June -- Bridal Veil Falls Trail, RMNP, CO white & cream
bluets (Houstonia caerulea) -- in April -- Natchez Trace Parkway, southern Tennessee white & cream
bluets (Houstonia caerulea) -- in July -- Acadia National Park, Maine
small bluet (Houstonia pusilla) -- in April -- Natchez Trace Parkway, southern Tennessee white & cream