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1991 - 200 of 211599 results
Epilobium angustifolium
Epilobium angustifolium, fruits and seeds
Epilobium angustifolium in fruit near Port Arthur
Epilobium angustifolium shedding seeds
Epilobium on the roadside
Epipactis pollination
Epipactis tesselata (Goodyera tesselata)
Epipactis tesselata (Goodyera tesselata)
Equisetum arvense
Equisetum arvense
Equisetum arvense, cones
Equisetum arvense diagram, wall chart of sporangia and spores
Equisetum arvense near greenhouse
Equisetum arvense near greenhouse
Equisetum arvense, wall chart
Equisetum arvense, wall chart showing cross section of cone
Equisetum hyemale
Equisetum kansanum (Equisetum laevigatum)
Equisetum kansanum (Equisetum laevigatum)
Equisetum laevigatum
Equisetum palustre
Equisetum pratense
Equisetum scirpoides
Equisetum scirpoides
Equisetum sylvaticum
Equisetum sylvaticum
Equisetum sylvaticum
Equisetum sylvaticum
Equistetum limosum (Equisetum fluviatile)
Eragrostis megastachya (Eragrostis cilianensis)
Eragrostis megastachya (Eragrostis cilianensis)
Eragrostis megastachya (Eragrostis cilianensis), close up
Eragrostis megastachya (Eragrostis cilianensis), close up
Erigeron canadensis (Conyza canadensis)
Erigeron canadensis (Conyza canadensis)
Erigeron philadelphicus
Erigeron philadelphicus
Erigeron philadelphicus
Eriophorum augustifolium
Eriophorum augustifolium
Eriophorum augustifolium in meadow
Eriophorum gracile
Eriophorum in a spruce swamp
Eriophorum in a swamp
Erosion in the Bandlands of South Dakota
Erosion in the Bandlands of South Dakota
Erysimum asperrimum (Erysimum capitatum)
Erythronium albidum
Erythronium albidum
Erythronium albidum
Erythronium albidum, close-up
Erythronium albidum, extensive field
Erythronium albidum, extensive field
Erythronium albidum in home garden
Erythronium albidum in home garden
Erythronium americanum
Erythronium propullans
Euonymus atropurpureus leaf and fruit
Euonymus atropurpureus leaf and fruit
Euonymus atropurpureus, ripe fruit
Eupatorium maculatum
Eupatorium maculatum
Eupatorium maculatum (Eutrochium maculatum) on a hill swamp
Eupatorium perfoliatum
Eupatorium perfoliatum
Eupatorium urticifolium
Eupatorium urticifolium (Eupatorium rugosum)
Euphorbia corollata
Euphorbia corollata, near
Euphorbia cyparissias
Euphorbia cyparissias
Euphorbia cyparissias
Euphorbia maculata
Euphorbia marginata
Euphorbia rosette
Evening scene at Lake Itasca
Evening scene at Rice Lake Camp
Evening scene in Minnesota
Evening scene on Bald Eagle Lake
Evening scene on the dock on Lake Itasca
Evening scene on the dock on Lake Itasca
Evening scene, westward over Clear Lake
Excellent Mountain Plover on nest
Excursion party at docks, headed for Biological Station
Excursion party at the Docks at the Foresty Biology Station in Itasca Park
Exploding fruit of Impatiens
Exploding pods of Partridge pea
Explosive apparatus, pollination in legumes
Explosive device in legumes for pollen
Explosive pod of Wild Pea
Explosive pods of Florida bean after opening
Explosive pods of Florida bean before and after
Explosive pods of Viola
Fagopyrum esculentum
Fagopyrum nectaries
Fagopyrum nectaries
Fallen trees at Fort Snelling after recent windfalls
Fallen trees at Fort Snelling after recent windfalls decaying
Fallen trees at Fort Snelling after recent windfalls showing decaying timber
Fallen trees decaying at Fort Snelling