Tree Spiral, CaliforniaPastel Leaves, GalapagosShade Tree, TanzaniaSpring Bloom, North CarolinaFern Frond, CaliforniaSavannah Oasis, TanzaniaMountain Meadow, CaliforniaCornfield Flower, TanzaniaCactus Flower, U.S. Virgin IslandsForest Floor, TennesseeOak Woodlands, CaliforniaPollination, North CarolinaArching Leaf, HawaiiFire Scars, North CarolinaFerns and Fungi, CaliforniaFallen Tree, CaliforniaLeaf Lines, HawaiiGrowing Earthward, TanzaniaLonesome Flower, UtahUnfurling Fern, North Carolina