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Redstem Saxifrage. Saxifraga lyallii

Redstem Saxifrage. Saxifraga lyallii (1925)

Mary Vaux Walcott (American, 1860-1940)
Redstreak

Redstreak (1811)

Thomas Andrew Knight (English, 1759–1838)
Reflexed Bletia

Reflexed Bletia (1815-1819)

Sydenham Edwards (English, 1768-1819)
Reineckea carnea, fol. varieg

Reineckea carnea, fol. varieg (1854-1896)

Charles Antoine Lemaire (French, 1800-1871)
Reines-Marguerites (nouvelles) à centre blanc

Reines-Marguerites (nouvelles) à centre blanc (1854-1896)

Charles Antoine Lemaire (French, 1800-1871)
Reseda fruticolosa

Reseda fruticolosa (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)
Reseda maxima – Reseda alba, foliis pinnatis – Réséda grande – Le Reseda, ou Herbe maure. (white upright mignonette; wild mignonette, Common mignonette; Bastard rocket; Sweet reseda )

Reseda maxima – Reseda alba, foliis pinnatis – Réséda grande – Le Reseda, ou Herbe maure. (white upright mignonette; wild mignonette, Common mignonette; Bastard rocket; Sweet reseda ) (1772-1793)

Giorgio Bonelli (Italian, 1742-1782)
Reseda mediterranea

Reseda mediterranea (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)
Rest harrow

Rest harrow (1739)

Elizabeth Blackwell (Scottish, 1707–1758)
Restrepia antennifera

Restrepia antennifera (1854-1896)

Charles Antoine Lemaire (French, 1800-1871)
Restrepia antennifera

Restrepia antennifera (1885-1906)

Jean Jules Linden (Belgian, 1817-1898)
Rhabarbarum forte Dioscoridis, et Antiquorum – Rabarbero – Rubarbe – Rhubarb

Rhabarbarum forte Dioscoridis, et Antiquorum – Rabarbero – Rubarbe – Rhubarb (1772-1793)

Giorgio Bonelli (Italian, 1742-1782)
Rhamnus [Cassine aethiopica (=Mystroxylon aethiopicum)]

Rhamnus [Cassine aethiopica (=Mystroxylon aethiopicum)] (1817)

Clemenz Heinrich Wehdemann (German, 1762 - 1835)
Rhamnus [Curtisia dentata]

Rhamnus [Curtisia dentata] (1817)

Clemenz Heinrich Wehdemann (German, 1762 - 1835)
Rhamnus volubilis

Rhamnus volubilis (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)
Rhapis Flabelliformis

Rhapis Flabelliformis (1867-1870)

Edward Joseph Lowe (English, 1825 – 1900)
Rhapontic

Rhapontic (1739)

Elizabeth Blackwell (Scottish, 1707–1758)
Rheum Nobile, H.f.and T.

Rheum Nobile, H.f.and T. (1855)

Walter Hood Fitch (Scottish, 1817 – 1892)
Rhipsalis Cassutha

Rhipsalis Cassutha (1823)

William Jackson Hooker (English, 1785 – 1865)
Rhododendron (Rhododendron maximum)

Rhododendron (Rhododendron maximum) (1880)

Mary Vaux Walcott (American, 1860-1940)
Rhododendron arboreum

Rhododendron arboreum (1823)

William Jackson Hooker (English, 1785 – 1865)
Rhododendron ponticum

Rhododendron ponticum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)
Rhododendron ponticum

Rhododendron ponticum (1818-1824)

Gaetano Savi (Italian, 1769 – 1844)
Rhododendron Rollissonii

Rhododendron Rollissonii (1815-1819)

Sydenham Edwards (English, 1768-1819)
Rhododendrum

Rhododendrum (1750-1773)

Georg Dionysius Ehret (German, 1708-1770)
Rhododendrum (hybr.) Baron Osy

Rhododendrum (hybr.) Baron Osy (1854-1896)

Charles Antoine Lemaire (French, 1800-1871)
Rhododendrum (hybridum) Duchesse de Nassau

Rhododendrum (hybridum) Duchesse de Nassau (1854-1896)

Charles Antoine Lemaire (French, 1800-1871)
Rhododendrum Archiduc Albert (hybride)

Rhododendrum Archiduc Albert (hybride) (1854-1896)

Charles Antoine Lemaire (French, 1800-1871)
Rhododendrum azaleoides, var. crispinorum

Rhododendrum azaleoides, var. crispinorum (1854-1896)

Charles Antoine Lemaire (French, 1800-1871)
Rhododendrum Bijou de Gand (hybride)

Rhododendrum Bijou de Gand (hybride) (1854-1896)

Charles Antoine Lemaire (French, 1800-1871)