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Beech-Maple Forest, Frankonia Notch
Cactus
Cactus
Caltha palustris
Carrel cactus yucca in the desert in Southern California
Cattle grazing in the grasslands of Montana
Cattle grazing in the grasslands of Montana
Cedar Apple gall on Thuja plicata
Cedar Apple gall on Thuja plicata
Cedar Apple gall on Thuja plicata
Cedar Apple gall on Thuja plicata
Cedar Apple gall on Thuja plicata
Cedar Apple gall on Thuja plicata
Cedar Apple gall on Thuja plicata in autumn condition
Cedar Apple gall on Thuja plicata in autumn condition
Cedar Apply gall at Red Cedar, near
Chrysanthemum leucanthemum
Chrysanthemum leucanthemum, near
Commelina communis
Commelina communis
Cones and leaves of the Thuja occidentalis
Cones and leaves of the White Cedar
Cypress swamp
Cypress Swamp in the Japanese Gardens
Cypress Swamp in Winter Haven, Florida
Dicentra cucullaria
Equisetum arvense
Equisetum arvense
Equisetum hyemale
Erosion in the Bandlands of South Dakota
Erosion in the Bandlands of South Dakota
Fossil Ferns
Fossil Ferns
Fossil Ferns
General map of vegetation regions of North America
Grape phylloxera gall on grape leaf
Grape phylloxera gall on grape leaf
Grasslands of Montana showing early stages of erosion
Iris versicolor
Iris versicolor
Large Redwood near Orick, California
Lenzites sepiaria (Gleophyllum sepiarium), top view
Lenzites sepiaria (Gleophyllum sepiarium), under surface
Lilium superbum
Lilium superbum
Long-leaf Pine Forests in Florida showing Palmetto
Long-leaf Pine Forests in Florida tapped for resin
Mamillaria missouriensis
Mamillaria missouriensis
Monarda mollis