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Quercus wislizeni,
Interior Live Oak,
California
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Radermacheria elmeri,
China Doll,
SE Asia, Florida
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Reynosia septentricalis,
Red Ironwood,
Florida Keys
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Rhamnus caroliniana,
Yellow Carolina Buckthorn,
Texas-Nogle
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Rhamnus cathartica,
European Buckthorn,
Europe, Washington State
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Rhamnus cathartica,
European Buckthorn,
Slovenia
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Rhamnus purhiana,
Cascara,
Oregon & NW North America
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Rhododendron fortunei discolor,
Rusty-leaved Rhododendron,
Netherlands
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Rhododendron catawbiense,
Rhododendron--grandiflorum,
USA
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Rhododendron macrophyllum,
Pacific rhododendron,
Oregon, NW
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Rhododendron maximum,
Rosebay Rhododendron
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Rhodododendron ponticum,
Pontian Rhododendron,
Netherlands
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Rhosophaera rhodanthema,
Tulip Satinwood,
Australia
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Rhus copallinum,
Dwarf Sumac-wormy,
Texas-Nogle
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Rhus copallinum,
Shining Sumac or Winged Sumac,
Indiana
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Rhus hypoleuca,
Autumn-Flowering Sumac,
Hong Kong, South China
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Rhus javanica,
Poison Sumac,
Japan
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Rhus lancea,
African Sumac or Karee,
South Africa, Arizona
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Rhus laurina,
Laurel Sumac,
California
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Rhus ovata,
Sugar Sumac,
Arizona, California, Mexico
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Rhus sandwicensis,
Neneleau,
Pacific Islands, Hawaii
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Rhus taitensis,
Tahitian Sumac,
Pacific Islands, Hawaii
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Rhus trichocarpa,
Mountain Sumac,
Japan, Hiroshima
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