Region
United States
52
New York (State)
21
New York
17
Great Britain
16
États-Unis
13
England
12
Europe
11
North America
10
California
9
Canada
9
France
8
Northeastern States
8
China
7
Latin America
6
New York (N.Y.)
6
San Marino
6
USA
6
Grande-Bretagne
5
Spain
5
America
4
Canada, Eastern
4
London
4
Mexico
4
New York (État)
4
Royal Botanic Gardens, Kew
4
Espagne
3
Hawaii
3
Hudson River Valley (N.Y. and N.J.)
3
Italy
3
Panama
3
Tropics
3
Africa
2
Amazon River Region
2
Angleterre
2
Brazil
2
Brooklyn (New York, N.Y.)
2
Chicago
2
Chine
2
Egypt
2
Illinois
2
Ireland
2
Kew
2
Liverpool
2
Missouri
2
New Jersey
2
New York Botanical Garden
2
Scotland
2
Singapore
2
South America
2
21st century
1
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