Hibiscus Petals
Bright petals mark the hibiscus, a flowering plant found in much of the world.
Giant Lobelia
The leaves of a giant lobelia plant, photographed on Mount Kilimanjaro's Shira Plateau in Tanzania, spiral around the center.
Sunflower Florets
Beads of dew cling to the florets that spiral inside a sunflower head.
Calla Lily
A favorite of brides, the ethereal calla lily is often called the wedding flower.
Castor Bean Leaf Close-Up
Veins spider across a castor bean leaf in Hungary.
Claret Cup Cactus Flower
The flower of a claret cup cactus glows amid Tonto National Forest in Arizona.
Picotee Pansies
White borders rich purple in these picotee pansies in Gilroy, California.
Flower Spores
A flower's spores are accentuated.
Hairpin Banksia
The hairpin banksia (Banksia spinulosa) is native to eastern Australia.
Prickly Pear Cactus
Sharp spines erupt from the skin of a prickly pear cactus in the Galápagos Islands.
Coleus Plants
Coleus plants grow across much of South America.
Zinnia Hybrid Flower
Genetic engineering created this zinnia hybrid flower.
Castor Bean Leaf
The seeds of the castor bean plant (Ricinus communis) are the source of castor oil as well as the deadly poison ricin.
Hair Cap Moss
Hair cap moss (Polytrichum commune) is found throughout much of the world.
Water Lily
A water lily thrives in the Missouri Botanical Garden in St. Louis.
Red Tulips
Red tulips fill Lafayette Square in Washington, D.C.
Leaf
A leaf's veins stand out in deep relief.
Palm Fronds
Palm leaves, called fronds, are traditional symbols in many religions.
