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Cystopteris fragilis
Cystopteris fragilis
Cystopteris fragilis in home garden
Cystopteris fragilis on left and Cystopteris bulbifera on right
Cystopteris fragilis on left and Cystopteris bulbifera on right
Cystopteris in rock garden and fernery
Daedalea confragosa (Daedaleopsis confragosa)
Daedalea confragosa (Daedaleopsis confragosa)
Daedalea confragosa (Daedaleopsis confragosa)
Daedalea confragosa (Daedaleopsis confragosa), showing labyrinth of pores
Daedalea confragosa (Daedaleopsis confragosa), showing labyrinth of pores
Daedalea quercina
Daedalea quercina, pores under side
Daedalea unicolor (Cerrena unicolor)
Daedalea unicolor (Cerrena unicolor)
Daedalea unicolor (Cerrena unicolor), close up showing teeth
Daedalea unicolor (Cerrena unicolor) on birch log
Daedalea unicolor (Cerrena unicolor), pores
Daedalea unicolor (Cerrena unicolor) under log
Daedalea unicolor (Cerrena unicolor), woolly top
Daedalea unicolor (Cerrena unicolor), woolly top
Darlingtonia californica
Darlingtonia californica
Darlingtonia californica
Datura pods open at top
Dawing of Mountain Plover mating sequences
Deadly Amanita, Oak woods north of University Farm
Deadly Amanita, Oak woods north of University Farm
Dead trees in a margin of a Cedar swamp on Island Lake
Decodon verticillatus
Dense growth of Picea mariana near Connecticut Warbler's nest
Dense growth of Picea mariana near Connecticut Warbler's nest, another view
Dentaria laciniata (Cardamine concatenata)
Dentaria laciniata (Cardamine concatenata)
Dentaria laciniata (Cardamine concatenata)
Descending Mt. Edinburgh
Descending the snow-slope of Mount Rogers
Deserted lumber camp, Kendall Creek
Deserted Wigwam in an Indian village near Vermilion Lake
Desert tower in the Grand Canyon, Arizona
Desert waste of shifting sands in Anoka County
Desmids
Desmodium canadense
Desmodium fruits
Desmodium grandiflorum (Desmodium cuspidatum), large, with Miss I. Dorman
Desmodium, two species
Desmodium, two species
Devastation of winds to Hazel, etc., roots exposed
Development of pollen tubes
Devil's Chair at Taylors Falls
Devil's Track falls
Diagram, corms of Aplectrum
Diagram, corms of Aplectum on ground glass
Diagram, Explosive action by drying
Diagram, Impatiens-like fruits, explosive
Diagram, Mandible of a bee and a hornet
Diagram of Honey bee unloading nectar
Diagram, Rumex crispus cross section
Diagram, simple and branched hairs from Honey Bee
Dicentra
Dicentra canadensis
Dicentra cucullaria
Dicentra cucullaria
Dicentra cucullaria
Dicentra cucullaria
Dicentra cucullaria
Dicranum, close up
Diervilla florida (Weigela florida) cultivated
Diervilla lonicera leaf
Digitaria, Rosette, light relations
Digitaria sanguinalis
Dinner party on the beach
Dionaea
Dionaea, glands from leaf, sectional view, chart
Dionaea, glands from leaf, surface view, chart
Dionaea in flower
Dionaea in native habitat
Dionaea, leaf and sensitive spine
Dionaea, leaf with trap open, wall chart
Dionaea, leaf with trap open, wall chart
Dionaea, leaf with trap sprung, wall chart
Dionaea, leaf with trap sprung, wall chart
Dionaea muscipula
Dionaea, wall chart
Dioscorea villosa
Dioscorea villosa fruit
Dioscorea villosa, winged fruits only
Dipsacus fruit head
Dipsacus fruit head
Dirca palustris leaf
Dodecatheon amethystianum
Dodecatheon amethystianum
Dodecatheon amethystianum
Dodecatheon close up
Dodecatheon in the University Botanical Garden
Dodecatheon on rock cliff near Winona, two to three plants
Douglas Lodge
Douglas Lodge, view from Lake Itasca
Drawing of a male Mountain Plover mounting a female
Drawing of a male Mountain Plover showing coloration