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Euphorbia helioscopia L.
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Euphorbia helioscopia L.

Photo : Smithsonian Open Access (CC0)
Fagus grandifolia subsp. caroliniana (Loudon) Fernald & Rehder
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Fagus grandifolia subsp. caroliniana (Loudon) Fernald & Rehder

Photo : Smithsonian Open Access (CC0)
Potentilla canadensis L.
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Potentilla canadensis L.

Photo : Smithsonian Open Access (CC0)
Spiraea alba Du Roi
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Spiraea alba Du Roi

Photo : Smithsonian Open Access (CC0)
Euphorbia corollata L.
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Euphorbia corollata L.

Photo : Smithsonian Open Access (CC0)
Fragaria virginiana Mill.
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Fragaria virginiana Mill.

Photo : Smithsonian Open Access (CC0)
Artemisia campestris L.
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Artemisia campestris L.

Photo : Smithsonian Open Access (CC0)
Viola brittoniana Pollard
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Viola brittoniana Pollard

Photo : Smithsonian Open Access (CC0)
Rubus flagellaris Willd.
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Rubus flagellaris Willd.

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Rubus flagellaris Willd.
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Rubus flagellaris Willd.

Photo : Smithsonian Open Access (CC0)
Viola pedata L.
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Viola pedata L.

Photo : Smithsonian Open Access (CC0)
Lotus corniculatus L.
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Lotus corniculatus L.

Photo : Smithsonian Open Access (CC0)
Euphorbia ipecacuanhae L.
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Euphorbia ipecacuanhae L.

Photo : Smithsonian Open Access (CC0)
Physocarpus opulifolius (L.) Maxim.
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Physocarpus opulifolius (L.) Maxim.

Photo : Smithsonian Open Access (CC0)
Rosa sp.
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Rosa sp.

Photo : Smithsonian Open Access (CC0)
Rubus flagellaris Willd.
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Rubus flagellaris Willd.

Photo : Smithsonian Open Access (CC0)
Rubus flagellaris Willd.
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Rubus flagellaris Willd.

Photo : Smithsonian Open Access (CC0)
Rubus flagellaris Willd.
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Rubus flagellaris Willd.

Photo : Smithsonian Open Access (CC0)
Spergula arvensis L.
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Spergula arvensis L.

Photo : Smithsonian Open Access (CC0)
Oxalis violacea L.
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Oxalis violacea L.

Photo : Smithsonian Open Access (CC0)
Emilia fosbergii Nicolson
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Emilia fosbergii Nicolson

Photo : Smithsonian Open Access (CC0)
Polycodium macilentum Small
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Polycodium macilentum Small

Photo : Smithsonian Open Access (CC0)
Helenium autumnale L.
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Helenium autumnale L.

Photo : Smithsonian Open Access (CC0)
Verbascum sinuatum L.
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Verbascum sinuatum L.

Photo : Smithsonian Open Access (CC0)
Pedicularis spicata Pall.
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Pedicularis spicata Pall.

Photo : Smithsonian Open Access (CC0)
Carex arnellii Christ ex Scheutz
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Carex arnellii Christ ex Scheutz

Photo : Smithsonian Open Access (CC0)
Gelidium americanum (W.R. Taylor) Santelices
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Gelidium americanum (W.R. Taylor) Santelices

Photo : Smithsonian Open Access (CC0)
Chaetophractus villosus
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Chaetophractus villosus

Photo : Smithsonian Open Access (CC0)
Lepidium densiflorum Schrad.
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Lepidium densiflorum Schrad.

Photo : Smithsonian Open Access (CC0)
Thalictrum pubescens Pursh
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Thalictrum pubescens Pursh

Photo : Smithsonian Open Access (CC0)
Untitled (Railroad Crossing Variation)
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Untitled (Railroad Crossing Variation)

Photo : Smithsonian American Art Museum, Gift of Corrine Riley and museum purchase through the Barbara Coffey Quilt Endowment and the Luisita L. and Franz H. Denghausen Endowment (CC0) — Smithsonian Open Access
Gaya occidentalis (L.) Sweet
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Gaya occidentalis (L.) Sweet

Photo : Smithsonian Open Access (CC0)
Taraxacum tenuiceps Soest
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Taraxacum tenuiceps Soest

Netherlands
Photo : Naturalis Biodiversity Center (CC0) — Europeana (Naturalis Biodiversity Center)
Pera ekmanii Urb.
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Pera ekmanii Urb.

Photo : Smithsonian Open Access (CC0)
Malachra alceifolia Jacq. var. alceifolia
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Malachra alceifolia Jacq. var. alceifolia

Photo : Smithsonian Open Access (CC0)
Abutilon hirtum (Lam.) Sweet
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Abutilon hirtum (Lam.) Sweet

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Euphorbia mendezii Boiss.
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Euphorbia mendezii Boiss.

Photo : Smithsonian Open Access (CC0)
Stigeoclonium lubricum
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Stigeoclonium lubricum

Photo : Smithsonian Open Access (CC0)
Myiarchus tuberculifer brunneiceps
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Myiarchus tuberculifer brunneiceps

Photo : Smithsonian Open Access (CC0)
Button Owney tag
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Button Owney tag

Popular Culture
Photo : Smithsonian Open Access (CC0)
Manitou, Colorado Owney tag
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Manitou, Colorado Owney tag

Popular Culture
Photo : Smithsonian Open Access (CC0)
Erie Railroad
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Erie Railroad

Architecture\bridgeLandscape\waterArchitecture\vehicle\trainRecreation\sport and play\fishing
Photo : Smithsonian American Art Museum, Gift of Herbert Waide Hemphill, Jr. and museum purchase made possible by Ralph Cross Johnson (CC0) — Smithsonian Open Access
Lupinus nanus Douglas ex Benth.
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Lupinus nanus Douglas ex Benth.

Photo : Smithsonian Open Access (CC0)
Crossing of Chowchillas River
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Crossing of Chowchillas River

Photo : Smithsonian Open Access (CC0)
Patent Model for a Press for Printing Railroad Tickets in Two or More Colors
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Patent Model for a Press for Printing Railroad Tickets in Two or More Colors

Photo : Smithsonian Open Access (CC0)
Baltimore and Grafton Railway Owney tag
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Baltimore and Grafton Railway Owney tag

The Gilded Age (1877-1920)Popular Culture
Photo : Transfer from the Post Office Department (CC0) — Smithsonian Open Access
Sidewall
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Sidewall

Photo : Gift of Mrs. Calvin Allison (CC0) — Smithsonian Open Access
Musineon divaricatum (Pursh) Nutt.
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Musineon divaricatum (Pursh) Nutt.

Photo : Smithsonian Open Access (CC0)
Saint Gour le chemin de fer B.K. Editeur
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Saint Gour le chemin de fer B.K. Editeur

Spain
Photo : Desconegut — Europeana (Ajuntament de Girona) (domaine public)
Hôtel du Sauvage
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Hôtel du Sauvage

Belgium
Photo : P. Barella — Europeana (Catholic University of Leuven) (domaine public)
Bromus tectorum L.
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Bromus tectorum L.

Photo : Smithsonian Open Access (CC0)
Sagittaria cuneata E. Sheld.
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Sagittaria cuneata E. Sheld.

Photo : Smithsonian Open Access (CC0)
Bromus sterilis L.
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Bromus sterilis L.

Photo : Smithsonian Open Access (CC0)
Bromus leptoclados Nees
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Bromus leptoclados Nees

Photo : Smithsonian Open Access (CC0)
Paspalum paniculatum L.
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Paspalum paniculatum L.

Photo : Smithsonian Open Access (CC0)
Paspalum virgatum L.
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Paspalum virgatum L.

Photo : Smithsonian Open Access (CC0)
Eleusine indica (L.) Gaertn.
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Eleusine indica (L.) Gaertn.

Photo : Smithsonian Open Access (CC0)
Caprimulgus carolinensis
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Caprimulgus carolinensis

Photo : Smithsonian Open Access (CC0)
Dichelachne micrantha (Cav.) Domin
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Dichelachne micrantha (Cav.) Domin

Photo : Smithsonian Open Access (CC0)
Podophyllum peltatum L.
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Podophyllum peltatum L.

Photo : Smithsonian Open Access (CC0)