1
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Species
alata
(Hook.) D. Dietr.
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2
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Varietas
sagittata
Gray
syn. Prenanthes sagittata
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3
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Species
alba
L.
common name:
white rattlesnakeroot
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4
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Species
altissima
L.
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5
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Varietas
cinnamomea
Fern.
syn. Prenanthes altissima
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6
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Species
aspera
Michx.
common name:
rough rattlesnakeroot
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7
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Species
autumnalis
Walt.
common name:
slender rattlesnakeroot
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8
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Species
barbata
(Torr. & Gray) Milstead
common name:
barbed rattlesnakeroot
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9
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Species
boottii
(DC.) Gray
common name:
alpine rattlesnakeroot
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10
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Species
crepidinea
Michx.
common name:
nodding rattlesnakeroot
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11
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Species
cylindrica
(Small) E.L. Braun
syn. Prenanthes roanensis
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12
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Species
integrifolia
(Cass.) Small
syn. Prenanthes serpentaria
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13
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Species
lessingii
Hult�n
syn. Prenanthes alata
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14
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Species
nana
(Bigelow) Torr.
common name:
dwarf rattlesnakeroot
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15
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Species
racemosa
Michx.
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16
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Subspecies
multiflora
Cronq.
common name:
purple rattlesnakeroot
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17
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Varietas
multiflora
(Cronq.) Dorn
syn. Prenanthes racemosa ssp. multiflora
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18
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Subspecies
racemosa
common name:
purple rattlesnakeroot
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19
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Species
roanensis
(Chickering) Chickering
common name:
Roan Mountain rattlesnakeroot
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20
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Species
sagittata
(Gray) A. Nels.
common name:
arrowleaf rattlesnakeroot
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21
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Species
serpentaria
Pursh
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22
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Varietas
barbata
Torr. & Gray
syn. Prenanthes barbata
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23
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Species
trifoliolata
(Cass.) Fern.
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24
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Varietas
nana
(Bigelow) Fern.
syn. Prenanthes nana
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25
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Species
virgata
Michx.
syn. Prenanthes autumnalis
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26
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Species
x mainensis
Gray (pro sp.)
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