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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Sapindales

Familia: Rutaceae
Subfamilia: Amyridoideae
Genus: Ptelea
Species: P. aptera – P. crenulata – P. trifoliata

Ptelea L., Sp. Pl. 1: 118. (1753)

Type species: Ptelea trifoliata L., Sp. Pl. 1: 118. (1753)


Apatitia Desv. non Apatitia Ham.
Bellucia Adans. non Bellucia Neck. ex Raf., Sylva Tellur. 92. (1838) nom. cons. (Melastomataceae)
Dodonaea Boehm. non Dodonaea Mill., Gard. Dict. Abr., ed. 4. [450]. (1754) (Sapindaceae)
Taravalia Greene


Linnaeus, C. 1753. Species Plantarum 1: 118.
Govaerts, R. et al. 2021. Ptelea in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Mar. 2. Reference page.
International Plant Names Index. 2021. Ptelea. Published online. Accessed: Mar. 2 2021.

Vernacular names

Ptelea is a genus of flowering plants in the citrus family, Rutaceae. The name, of Greek derivation, is the classical name of the elm tree. Carl Linnaeus used that word for this genus because of the resemblance of its fruit to that of the elm.[2] Members of the genus are commonly known as hoptrees.[3]


Ptelea aptera Parry
Ptelea crenulata Greene — California hoptree
Ptelea trifoliata L. — Common hoptree
Ptelea trifoliata subsp. angustifolia (Benth.) V.L.Bailey
Ptelea trifoliata subsp. coahuilensis (Greene) V.L.Bailey
Ptelea trifoliata f. fastigiata (Bean) Rehder
Ptelea trifoliata subsp. pallida (Greene) V.L.Bailey
Ptelea trifoliata subsp. polyadenia (Greene) V.L.Bailey
Ptelea trifoliata f. pubescens (Pursh) Voss
Ptelea trifoliata subsp. trifoliata[3][4]

Formerly placed here

Cliftonia monophylla (Lam.) Britton ex Sarg. (as P. monophylla Lam.)
Dodonaea viscosa subsp. angustifolia (L.f.) J.G.West (as P. viscosa L.)[4]


"genus Ptelea". Germplasm Resources Information Network (GRIN) online database. Retrieved 2012-05-03.
Keeler, Harriet L. (1900). Our Native Trees and How to Identify Them. New York: Charles Scribner's Sons. pp. 32–35.
"Ptelea". Integrated Taxonomic Information System. Retrieved 2012-05-03.
"GRIN Species Records of Ptelea". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2012-05-03.

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Biology Encyclopedia

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