Apocynaceae
Amsonia
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Amsonia hubrichtii Woodson
Arkansas bluestar
Waif
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Amsonia tabernaemontana var. tabernaemontana Walter
eastern bluestar
No Current Records
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Apocynum
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Apocynum androsaemifolium L.
spreading dogbane
Native
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Apocynum cannabinum L.
= Apocynum cannabinum var. hypericifolium
A.Gray
= Apocynum sibiricum
Jacq.
= Apocynum sibiricum var. cordigerum
(Greene) Fern.
hemp dogbane, prairie dogbane, Indian hemp
Native
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Apocynum ×floribundum Greene
= Apocynum androsaemifolium × A. cannabinum
= Apocynum ×medium
Greene
hybrid dogbane
Native
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Asclepias
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Asclepias amplexicaulis Sm.
clasping milkweed
Native
—
Watch-Listed
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Asclepias exaltata L.
tall milkweed, poke milkweed
Native
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Asclepias incarnata ssp. pulchra (Ehrh. ex Willd.) Woodson
= Asclepias incarnata var. pulchra
(Ehrh. ex Willd.) Pers.
downy swamp milkweed
Native
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Asclepias purpurascens L.
purple milkweed
Native
—
Endangered
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Asclepias quadrifolia Jacq.
four-leaved milkweed
Native
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Asclepias syriaca L.
common milkweed
Native
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Asclepias tuberosa L.
butterfly milkweed
Native
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Watch-Listed
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Asclepias verticillata L.
whorled milkweed
Native
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Threatened
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Vinca
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Vinca major L.
greater periwinkle
Waif
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Vinca minor L.
common periwinkle
Actually Invasive
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Vincetoxicum
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Vincetoxicum hirundinaria Medik.
= Cynanchum vincetoxicum
(L.) Pers.
white swallowwort
Waif
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Vincetoxicum nigrum (L.) Moench
= Cynanchum louiseae
Kartesz & Gandhi
= Cynanchum nigrum
(L.) Pers.
black swallowwort
Invasive
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Vincetoxicum rossicum (Kleopow) Barbarich
= Cynanchum rossicum
(Kleopow) Borhidi
pale swallowwort
Likely Invasive
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