Fraxinus genus --- olive family
singleleaf ash (Fraxinus anomala) -- in April -- Canyonlands National Park, UT green & brown
singleleaf ash (Fraxinus anomala) -- in April -- Arches National Park, UT
fragrant ash (Fraxinus cuspidata) -- in April -- Big Bend Ranch State Park, TX white & cream
green ash (Fraxinus pennsylvanica) -- in January -- North Shields Ponds, Fort Collins Natural Area, CO green & brown
green ash (Fraxinus pennsylvanica) -- in February -- Gustav Swanson Natural Area, Fort Collins, CO
green ash (Fraxinus pennsylvanica) -- in September -- Springer, Fort Collins Natural Area, Fort Collins, Larimer County, CO