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Ampelamus Raf.

Amer. Monthly Mag. & Crit. Rev. 4: 192. 1819.
Status:Synonym of 
Rank:Genus
Family: Apocynaceae

Ampelamus albidus (Nutt.) Britton

Bull. Torrey Bot. Club
Rank:Species
Family: Apocynaceae

Amsonia Walter

Fl. Carol. 11, 98. 1788. (Apr-Jun 1788)
Status:Accepted Name
Rank:Genus
Family: Apocynaceae
Order: Gentianales

Amsonia ciliata Walter

Fl. Carol.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Amsonia illustris Woodson

Ann. Missouri Bot. Gard.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Amsonia tabernaemontana Walter

Fl. Carol.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Apocynum L.

Sp. Pl. 1: 213. 1753. (1 May 1753)
Status:Synonym of Gymnema R. Br.
Rank:Genus
Family: Apocynaceae

Apocynum androsaemifolium L.

Sp. Pl.
Status:Accepted Name
Rank:Species
Family: Apocynaceae

Apocynum cannabinum L.

Sp. Pl.
Status:Accepted Name
Rank:Species
Family: Apocynaceae

Apocynum sibiricum Jacq.

Hort. Bot. Vindob.
Status:Synonym of Apocynum cannabinum L.
Rank:Species
Family: Apocynaceae

Asclepias L.

Sp. Pl. 1: 214. 1753. (1 May 1753)
Status:Accepted Name
Rank:Genus
Family: Apocynaceae
Order: Gentianales

Asclepias exaltata L.

Amoen. Acad.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias hirtella (Pennell) Woodson

Ann. Missouri Bot. Gard.
Rank:Species
Family: Apocynaceae

Asclepias incarnata L.

Sp. Pl.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias lanceolata Walter

Fl. Carol.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias longifolia Michx.

Fl. Bor.-Amer.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias ovalifolia Decne.

Prodr.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias perennis Walter

Fl. Carol.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias purpurascens L.

Sp. Pl.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias quadrifolia Jacq.

Observ. Bot.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias rubra L.

Sp. Pl.
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias speciosa Torr.

Ann. Lyceum Nat. Hist. New York
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias stenophylla A.Gray

Proc. Amer. Acad. Arts
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales

Asclepias syriaca L.

Sp. Pl. ed. 2
Status:Accepted Name
Rank:Species
Family: Apocynaceae
Order: Gentianales