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1998 - 200 of 210321 results
Smilax hispida (Smilax tamnoides) leaf
Smith
Snow Crystals
Snow Crystals
Snow slope north of Mount Burgess
Solanum dulcamara flower and fruit
Solanum nigrum
Solidago canadensis
Solidago canadensis
Solidago canadensis
Solidago canadensis close-up
Solidago gigantea
Solidago hispida
Solidago in fruit
Solidago on the shore of Vadnais Lake
Solidago rigida
Solidago uliginosa
Sonchus arvenis
Sorbaria sorbifolia
Sorbus americana
South eastern forest on a bluff
Southern Slopes and Valleys near Lake City
Spanish Dagger Tree (yucca) in the California desert
Spanish Moss on a Florida Oak
Sparganium
Specimen of Epigaea repens
Specimen of Epigaea repens
Sphagnum in fruit, close up
Sphagnum in tamarack swamp
Sphagnum on top of hummock
Spherical grinding stones from pot holes
Spinulose Shield Fern and Lady Fern fronds
Spiny cone gall of Celtis
Spiny cone gall of Quercus coccinea
Spiraea
Spiraea leaf
Spiraea salicifolia and Spiraea tomemtosa
Spiraea tomentosa
Spiraea vanhouttei
Spiranthes cernua
Spiranthes cernua
Spiranthes cernua, close up
Spiranthes cernua (Coccineorchis cernua)
Spiranthes gracilis
Spiranthes gracilis
Spireae salicifolia
Spireae salicifolia
Spirodela polyrhiza
Spirodela polyrhiza, near view
Spirogya
Spirogyra
Spirogyra, fruiting
Spirogyra, vegetative cell
Split Rock Lighthouse
Split Rock Lighthouse, near view
Split Rock Lighthouse on the North Shore of Lake Superior
Spongy oak-apple gall of Quercus coccinea
Spotted Mushroom, close-up
Spring Creek Canyon
Spring Rose Gall of Wild Rose
Spring Wildflowers near the Cannon River
Spruce hen on the Isabella River near Bald Eagle Lake
Spruce swamp along Ely Road near Finland
Spruce Swamp near Island Lake in Northome
Spruce swamp on the North Shore near the border of Minnesota and Canada
Spruces, White and Blue, leaves
S. stellata
S. stellata
Stachys palustris
Stachys palustris
Staminate catkins of the Populus deltoides
Staminate flowers of Populus deltoides, enlarged
Staphylea trifolia leaf
Staphylea trifolia, new view, cut to show chambers
Staphylea trifolia on branches
Starfish at low tide
Starfish at low tide
St. Croix gorge and bridge near Taylor's Falls
Steironema ciliatum (Lysimachia ciliata)
Stem of Tree-fern, close up
Stem of Tree-fern, close up
Stemonitis
Sticta oregana
Sticta oregana
Sticta pulmonaria
St. Louis River in Jay Cooke State Park
St. Louis River in Jay Cooke State Park
St. Louis River in Jay Cooke State Park
St. Louis River in Jay Cooke State Park
Stone-crop leaves showing propagation by leaf
Stream Below Twin Falls, Yohoo Valley
Streptopus roseus (Streptopus lanceolatus)
Streptopus roseus (Streptopus lanceolatus)
Strobilomyces strobilaceus
Sturdy Quercus macrocarpa (Quercus iberica) in the sand dunes in Anoka County
Sturdy Quercus macrocarpa (Quercus iberica) on sand dunes
Sulpher bracket
Sulpher bracket
Sulpher bracket
Sulpher bracket