1
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Species
acanthoides
L.
common name:
spiny plumeless thistle
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2
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Species
altissimus
L.
syn. Cirsium altissimum
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3
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Species
americanus
(Gray) Rydb.
syn. Cirsium tioganum var. tioganum
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4
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Species
araneosus
Osterhout
syn. Cirsium araneans
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5
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Species
arvensis
(L.) Robson
syn. Cirsium arvense
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6
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Species
austrinus
Small
syn. Cirsium texanum
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7
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Species
carolinianus
Walt.
syn. Cirsium carolinianum
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8
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Species
coloradensis
Rydb.
syn. Cirsium tioganum var. coloradense
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9
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Species
crispus
L.
common name:
curly plumeless thistle
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10
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Species
discolor
(Muhl. ex Willd.) Nutt.
syn. Cirsium discolor
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11
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Species
helleri
Small
syn. Cirsium undulatum var. undulatum
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12
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Species
inamoenus
Greene
syn. Cirsium neomexicanum var. utahense
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13
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Species
lanceolatus
L.
syn. Cirsium vulgare
|
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14
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|
Species
lecontei
(Torr. & Gray) Pollard
syn. Cirsium lecontei
|
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15
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Species
macounii
Greene
syn. Cirsium edule
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16
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Species
macrocephalus
Desf.
syn. Carduus nutans ssp. macrocephalus
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17
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Species
macrolepis
Peterm.
syn. Carduus nutans ssp. macrolepis
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18
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Species
marianus
L.
syn. Silybum marianum
common name:
milk thistle, mary thistle
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19
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Species
muticus
(Michx.) Pers.
syn. Cirsium muticum
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20
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Species
nevadensis
Greene
syn. Cirsium humboldtense
|
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21
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Species
nutans
L.
common name:
musk thistle
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22
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Subspecies
leiophyllus
(Petrovic) Stojanov & Stef.
common name:
nodding plumeless thistle
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23
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|
Varietas
leiophyllus
(Petrovic) Ar�nes
syn. Carduus nutans ssp. leiophyllus
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24
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Subspecies
macrocephalus
(Desf.) Nyman
common name:
nodding plumeless thistle
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25
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Varietas
macrocephalus
(Desf.) Boivin
syn. Carduus nutans ssp. macrocephalus
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26
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Subspecies
macrolepis
(Peterm.) Kazmi
common name:
nodding plumeless thistle
|
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27
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Subspecies
nutans
common name:
nodding plumeless thistle
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28
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Varietas
vestitus
(Hallier) Boivin
syn. Carduus nutans ssp. leiophyllus
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29
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|
Species
nuttallii
(DC.) Pollard
syn. Cirsium nuttallii
|
|
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30
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Species
pinetorum
Small
syn. Cirsium horridulum var. horridulum
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31
|
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Species
pulchellus
Greene
syn. Cirsium calcareum
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32
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Species
pumilus
Nutt.
syn. Cirsium pumilum
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33
|
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34
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Species
repandus
(Michx.) Pers.
syn. Cirsium repandum
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35
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Species
smallii
(Britt.) Ahles
syn. Cirsium horridulum var. horridulum
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36
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Species
spathulatus
Osterhout
syn. Cirsium scapanolepis
|
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37
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Species
spinosissimus
Walt.
syn. Cirsium horridulum var. horridulum
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38
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Species
tenuiflorus
W. Curtis
common name:
winged plumeless thistle
|
|
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39
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Species
tracyi
Rydb.
syn. Cirsium undulatum var. tracyi
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40
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Species
truncatus
Greene
syn. Cirsium calcareum
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41
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Species
undulatus
Nutt.
|
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42
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Varietas
canescens
(Nutt.) Porter
syn. Cirsium canescens
|
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43
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|
Species
virginianus
L.
syn. Cirsium virginianum
|
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44
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Species
vulgaris
Savi
syn. Cirsium vulgare
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45
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Species
x orthocephalus
Wallr.
|
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