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Pyrus communis: Souvenir du Congress

Pyrus communis: Souvenir du Congress (1905)

Deborah Griscom Passmore (American, 1840–1911)
Pyrus communis: Souvenir du Congress

Pyrus communis: Souvenir du Congress (1909)

Amanda Almira Newton (American, 1860-1943)
Pyrus communis: Souvenir du Congress

Pyrus communis: Souvenir du Congress (1912)

Ellen Isham Schutt (American, 1873 – 1955)
Pyrus communis: Summer Beauty

Pyrus communis: Summer Beauty (1893)

Deborah Griscom Passmore (American, 1840–1911)
Pyrus communis: Tyson

Pyrus communis: Tyson (1912)

Ellen Isham Schutt (American, 1873 – 1955)
Pyrus communis: Vicar of Winkfield

Pyrus communis: Vicar of Winkfield (1918)

Royal Charles Steadman (American, 1875 – 1964)
Pyrus communis: Wiest

Pyrus communis: Wiest (1899)

Bertha Heiges (American, 1866-1956)
Pyrus communis: Wiest

Pyrus communis: Wiest (1898)

Deborah Griscom Passmore (American, 1840–1911)
Pyrus communis: Wilder

Pyrus communis: Wilder (1915)

Mary Daisy Arnold (American, 1873 – 1955)
Pyrus communis: Wilder Early

Pyrus communis: Wilder Early (1908)

Amanda Almira Newton (American, 1860-1943)
Pyrus communis: Winter Bartlett

Pyrus communis: Winter Bartlett (1913)

Ellen Isham Schutt (American, 1873 – 1955)
Pyrus communis: Worden Seckel

Pyrus communis: Worden Seckel (1922)

Royal Charles Steadman (American, 1875 – 1964)
Pyrus communis: Worden Seckel

Pyrus communis: Worden Seckel (1915)

Mary Daisy Arnold (American, 1873 – 1955)
Pyrus japonica (Japanese quince)

Pyrus japonica (Japanese quince) (1806)

Mary Lawrance (English, 1776 - 1831)
Pyrus pyrifolia

Pyrus pyrifolia

Mary Daisy Arnold (American, 1873 – 1955)
Pyrus pyrifolia: Pear Apple

Pyrus pyrifolia: Pear Apple (1921)

Mary Daisy Arnold (American, 1873 – 1955)
Pyxie (Pyxidanthera barbulata)

Pyxie (Pyxidanthera barbulata) (1919)

Mary Vaux Walcott (American, 1860-1940)
Pyxie. Pyxidanthera barbulata

Pyxie. Pyxidanthera barbulata (1925)

Mary Vaux Walcott (American, 1860-1940)
Quakerladies (Houstonia caerulea)

Quakerladies (Houstonia caerulea) (1917)

Mary Vaux Walcott (American, 1860-1940)
Quakerladies. (Houstonia caerulea)

Quakerladies. (Houstonia caerulea) (1925)

Mary Vaux Walcott (American, 1860-1940)
Quamoclit Americana foliis cordiformibus, acutis, et leviter angulatis, floribus sanguineis

Quamoclit Americana foliis cordiformibus, acutis, et leviter angulatis, floribus sanguineis (1772-1793)

Giorgio Bonelli (Italian, 1742-1782)
Quamoclit foliis digitatis, pentaphyllos, pedunaculis unifloris, flore dilute purpurascente – Ipomoea

Quamoclit foliis digitatis, pentaphyllos, pedunaculis unifloris, flore dilute purpurascente – Ipomoea (1772-1793)

Giorgio Bonelli (Italian, 1742-1782)
Quamoclit, foliis tenuiter incisis, et pinnatis – Ipomæa.(cypress vine, cardinal climber, star glory)

Quamoclit, foliis tenuiter incisis, et pinnatis – Ipomæa.(cypress vine, cardinal climber, star glory) (1772-1793)

Giorgio Bonelli (Italian, 1742-1782)
Queen Elizabeth’s Oak

Queen Elizabeth’s Oak (1826)

Jacob George Strutt (English, 1784 – 1867)
Queen Victoria

Queen Victoria (1924)

Henriette Sjöberg (Swedish, 1842-1915)
Queen’s Slipper (Cypripedium reginae)

Queen’s Slipper (Cypripedium reginae) (1897)

Mary Vaux Walcott (American, 1860-1940)
Queencup (Clintonia uniflora)

Queencup (Clintonia uniflora) (1924)

Mary Vaux Walcott (American, 1860-1940)
Queencup (Clintonia uniflora)

Queencup (Clintonia uniflora) (1902)

Mary Vaux Walcott (American, 1860-1940)
Queencup (Clintonia uniflora)

Queencup (Clintonia uniflora) (1922)

Mary Vaux Walcott (American, 1860-1940)
Queencup (flower). Clintonia uniflora

Queencup (flower). Clintonia uniflora (1925)

Mary Vaux Walcott (American, 1860-1940)