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Silverberry (fruit). (Elaeagnus commutata)

Silverberry (fruit). (Elaeagnus commutata) (1925)

Mary Vaux Walcott (American, 1860-1940)
Skeletonflower. (Lygodesmia juncea)

Skeletonflower. (Lygodesmia juncea) (1925)

Mary Vaux Walcott (American, 1860-1940)
Skunkcabbage. (Spathyema foetida)

Skunkcabbage. (Spathyema foetida) (1925)

Mary Vaux Walcott (American, 1860-1940)
Southern Magnolia (flower). (Magnolia grandiflora)

Southern Magnolia (flower). (Magnolia grandiflora) (1925)

Mary Vaux Walcott (American, 1860-1940)
Southern Magnolia (fruit). (Magnolia grandiflora)

Southern Magnolia (fruit). (Magnolia grandiflora) (1925)

Mary Vaux Walcott (American, 1860-1940)
Sun-dial Lupine. (Lupinus perennis)

Sun-dial Lupine. (Lupinus perennis) (1925)

Mary Vaux Walcott (American, 1860-1940)
Sweet Azalea. (Azalea arborescens)

Sweet Azalea. (Azalea arborescens) (1925)

Mary Vaux Walcott (American, 1860-1940)
Tall Larkspur. (Delphinium elongatum)

Tall Larkspur. (Delphinium elongatum) (1925)

Mary Vaux Walcott (American, 1860-1940)
Tarflower. (Befaria racemosa)

Tarflower. (Befaria racemosa) (1925)

Mary Vaux Walcott (American, 1860-1940)
Toad Trillium. (Trillium sessile)

Toad Trillium. (Trillium sessile) (1925)

Mary Vaux Walcott (American, 1860-1940)
Trumpet Honeysuckle. (Lonicera sempervirens)

Trumpet Honeysuckle. (Lonicera sempervirens) (1925)

Mary Vaux Walcott (American, 1860-1940)
Trumpetleaf (Sarracenia flava)

Trumpetleaf (Sarracenia flava) (1925)

Mary Vaux Walcott (American, 1860-1940)
Tuliptree. (Liriodendron tulipifera)

Tuliptree. (Liriodendron tulipifera) (1925)

Mary Vaux Walcott (American, 1860-1940)
Twinleaf. (Jeffersonia diphylla)

Twinleaf. (Jeffersonia diphylla) (1925)

Mary Vaux Walcott (American, 1860-1940)
Vernal Iris. (Iris verna)

Vernal Iris. (Iris verna) (1925)

Mary Vaux Walcott (American, 1860-1940)
Virginia Bluebells. (Mertensia virginica)

Virginia Bluebells. (Mertensia virginica) (1925)

Mary Vaux Walcott (American, 1860-1940)
Virginia Spiderwort. (Tradescantia virginiana)

Virginia Spiderwort. (Tradescantia virginiana) (1925)

Mary Vaux Walcott (American, 1860-1940)
White Troutlily. (Erythronium albidum)

White Troutlily. (Erythronium albidum) (1925)

Mary Vaux Walcott (American, 1860-1940)
Wild Sweet Crab. (Malus coronaria)

Wild Sweet Crab. (Malus coronaria) (1925)

Mary Vaux Walcott (American, 1860-1940)
Winterberry. (Ilex verticillata)

Winterberry. (Ilex verticillata) (1925)

Mary Vaux Walcott (American, 1860-1940)
Alaska Fleabane. Erigeron salsuginosus

Alaska Fleabane. Erigeron salsuginosus (1925)

Mary Vaux Walcott (American, 1860-1940)
Alberta Paintbrush. Castilleja miniata

Alberta Paintbrush. Castilleja miniata (1925)

Mary Vaux Walcott (American, 1860-1940)
Alberta Primrose. Primula maccalliana

Alberta Primrose. Primula maccalliana (1925)

Mary Vaux Walcott (American, 1860-1940)
Aleutian Fleabane. Erigeron unalaschensis

Aleutian Fleabane. Erigeron unalaschensis (1925)

Mary Vaux Walcott (American, 1860-1940)
Alpine Femleaf. Pedicularis contorta

Alpine Femleaf. Pedicularis contorta (1925)

Mary Vaux Walcott (American, 1860-1940)
Alpine Forget-me-not. Myosotis alpestris

Alpine Forget-me-not. Myosotis alpestris (1925)

Mary Vaux Walcott (American, 1860-1940)
Alpine Harebell. Campanula lasiocarpa

Alpine Harebell. Campanula lasiocarpa (1925)

Mary Vaux Walcott (American, 1860-1940)
Alpine Milkvetch. Astragalus alpinus

Alpine Milkvetch. Astragalus alpinus (1925)

Mary Vaux Walcott (American, 1860-1940)
Alpine Monkeyflower. Mimulus caespitosus

Alpine Monkeyflower. Mimulus caespitosus (1925)

Mary Vaux Walcott (American, 1860-1940)
Alpine Pointvetch (flower). Oxytropis podocarpa

Alpine Pointvetch (flower). Oxytropis podocarpa (1925)

Mary Vaux Walcott (American, 1860-1940)