400 items

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Rock Willow. Salix petrophila

Rock Willow. Salix petrophila (1925)

Mary Vaux Walcott (American, 1860-1940)
Rock Wormwood. Artemisia discolor

Rock Wormwood. Artemisia discolor (1925)

Mary Vaux Walcott (American, 1860-1940)
Rocky Mountain Kalmia. Kalmia microphylla

Rocky Mountain Kalmia. Kalmia microphylla (1925)

Mary Vaux Walcott (American, 1860-1940)
Rocky Mountain Rhododendron. Rhododendron albiflorum

Rocky Mountain Rhododendron. Rhododendron albiflorum (1925)

Mary Vaux Walcott (American, 1860-1940)
Rocky Mountain Twayblade. Ophrys nephrophylla

Rocky Mountain Twayblade. Ophrys nephrophylla (1925)

Mary Vaux Walcott (American, 1860-1940)
Rose Pogonia. Pogonia ophioglossoides

Rose Pogonia. Pogonia ophioglossoides (1925)

Mary Vaux Walcott (American, 1860-1940)
Rosebay Rhododendron. Rhododendron maximum

Rosebay Rhododendron. Rhododendron maximum (1925)

Mary Vaux Walcott (American, 1860-1940)
Rosebud Orchid. Pogonia divaricata

Rosebud Orchid. Pogonia divaricata (1925)

Mary Vaux Walcott (American, 1860-1940)
Rosette Cinquefoil. Potentilia uniflora

Rosette Cinquefoil. Potentilia uniflora (1925)

Mary Vaux Walcott (American, 1860-1940)
Ruff Gentian. Gentiana calycosa

Ruff Gentian. Gentiana calycosa (1925)

Mary Vaux Walcott (American, 1860-1940)
Sagebrush Mariposa. Calochortus macrocarpus

Sagebrush Mariposa. Calochortus macrocarpus (1925)

Mary Vaux Walcott (American, 1860-1940)
Saltmarsh Rosegentian. Sabbatia stellaris

Saltmarsh Rosegentian. Sabbatia stellaris (1925)

Mary Vaux Walcott (American, 1860-1940)
San Diego Mariposa. Calochortus weedii

San Diego Mariposa. Calochortus weedii (1925)

Mary Vaux Walcott (American, 1860-1940)
Sand Phacelia. Phacelia linearis

Sand Phacelia. Phacelia linearis (1925)

Mary Vaux Walcott (American, 1860-1940)
Saskatoon. Amelanchier alnifolia

Saskatoon. Amelanchier alnifolia (1925)

Mary Vaux Walcott (American, 1860-1940)
Saussurea. Saussurea densa

Saussurea. Saussurea densa (1925)

Mary Vaux Walcott (American, 1860-1940)
Scarlet Elder. Sambucus pubens

Scarlet Elder. Sambucus pubens (1925)

Mary Vaux Walcott (American, 1860-1940)
Scarlet Globe-mallow. Sphaeralcea grossulariaefolia

Scarlet Globe-mallow. Sphaeralcea grossulariaefolia (1925)

Mary Vaux Walcott (American, 1860-1940)
Scarlet Mariposa. Calochortus kennedyi

Scarlet Mariposa. Calochortus kennedyi (1925)

Mary Vaux Walcott (American, 1860-1940)
Shortspur Columbine. Aquilegia brevistyla

Shortspur Columbine. Aquilegia brevistyla (1925)

Mary Vaux Walcott (American, 1860-1940)
Showy Ladyslipper. Cypripedium reginae

Showy Ladyslipper. Cypripedium reginae (1925)

Mary Vaux Walcott (American, 1860-1940)
Showy Milkweed. Asclepias speciosa

Showy Milkweed. Asclepias speciosa (1925)

Mary Vaux Walcott (American, 1860-1940)
Showy Orchis. Orchis spectabilis

Showy Orchis. Orchis spectabilis (1925)

Mary Vaux Walcott (American, 1860-1940)
Showy Oxytrope. Oxy tropis splendens

Showy Oxytrope. Oxy tropis splendens (1925)

Mary Vaux Walcott (American, 1860-1940)
Siberian Onion. Allium sibericum

Siberian Onion. Allium sibericum (1925)

Mary Vaux Walcott (American, 1860-1940)
Sidebells Pyrola. Pyrola secunda

Sidebells Pyrola. Pyrola secunda (1925)

Mary Vaux Walcott (American, 1860-1940)
Sidesaddle Goldenrod. Solidago ciliosa

Sidesaddle Goldenrod. Solidago ciliosa (1925)

Mary Vaux Walcott (American, 1860-1940)
Slender Agoseris. Agoseris gracilens

Slender Agoseris. Agoseris gracilens (1925)

Mary Vaux Walcott (American, 1860-1940)
Slender Shootingstar. Dodecatheon pauciflorum

Slender Shootingstar. Dodecatheon pauciflorum (1925)

Mary Vaux Walcott (American, 1860-1940)
Slim Larkspur. Delphinium depauperatum

Slim Larkspur. Delphinium depauperatum (1925)

Mary Vaux Walcott (American, 1860-1940)