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Seeds of Pinus strobus (Strobus strobus)
Selaginella
Selaginella life cycle diagram
Selaginella rupestris (Selaginella sellowii)
Selaginella rupestris (Selaginella sellowii)
Selaginella rupestris (Selaginella sellowii)
Selaginella rupestris (Selaginella sellowii)
Senecio aureus (Packera aurea)
Sequoia gigantea (Sequoiadendron giganteum)
Sequoia gigantea (Sequoiadendron giganteum)
Setaria glauca (Cenchrus americanus)
Setaria viridis
Setaria viridis
Seven Mountain Plovers
Shale beds, Fucoids, Twin City Brick Company
Shale beds, Twin City Brick Company
Sheep grazing in the grasslands of Montana
Sheep grazing in the grasslands of Montana
Shelf Fungus on Alder, Daedalea unicolor (Cerrena unicolor)
Shelf Fungus on Birch, Polystictus pergamenus (Trichaptum biforme)
Shingle
Shore vegetation on the upper Baptism River
Shortgrass flowers
Shortgrass flowers
Shortgrass yellow flowers
Short tentacled sea anemone in a tide pool
Show Orchid, nearer view
Showy Lady Slipper, clump in Cambridge swamp
Siberian Pea Tree
Side of large Blow-out, vegetation advancing
Side of old Blow-out, undermining, turrets, etc.
Side of recent Blow-out, vegetation beginning
Silphium perfoliatum
Silphium perfoliatum
Sink hole on Phelp's Island at Lake Minnetonka
Sisyrinchium angustifolium
Sisyrinchium angustifolium
Sisyrinchium angustifolium, nearer view
Skunk Cabbage at margin of ice in Minnehaha Park
Skunk Cabbage in flower
Slippery Elm trunk and bark on the Minnesota River
Smaller Fringed Gentian
Smaller Fringed Gentian, close up
Small tide pools, Hall of Energids
Small waterfall on the north Kawishiwi River
Small White Lady Slipper, nearer view
Small white lady slipper, nearer view
Smilacina racemosa (Maianthemum racemosum)
Smilacina racemosa (Maianthemum racemosum)
Smilacina racemosa (Maianthemum racemosum)
Smilacina racemosa (Maianthemum racemosum)
Smilacina racemosa (Maianthemum racemosum)
Smilacina racemosa (Maianthemum racemosum) fruit
Smilacina trifolia (Maianthemum trifolium)
Smilax herbacea
Smilax herbacea
Smilax herbacea in fruit
Smilax hispida
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