Pentagonia (plant)

Pentagonia is a genus of over 40 species of plants in the Coffee or Gardenia family (Rubiaceae}.[1] Pentagonia species are native to Central America and northern South America, and grow in moist tropical forests below 900m.[2] The genus was first described by George Bentham in 1845.[3] The genus is noteworthy for its opposite pairs of huge leaves in a variety of shapes including entire, shallowly or deeply lobed, and even pinnate. These leaves can, in the case of a recently discovered species (possibly Pentagonia gomez-lauritoi) be up to four feet (1.2 meters) long not including the six inch (15 cm) petiole, and up to 2.5 feet (76 centimeters) in width.[4]

Pentagonia
Pentagonia macrophylla
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Subfamily: Ixoroideae
Tribe: Dialypetalantheae
Genus: Pentagonia
Benth.[1]
Species

See text.

Species

As of April 2021, Plants of the World Online accepted the following species:[1]

  • Pentagonia amazonica (Ducke) L.Andersson & Rova
  • Pentagonia angustifolia C.M.Taylor
  • Pentagonia australis C.M.Taylor & Janovec
  • Pentagonia baumannii Cornejo & Rova
  • Pentagonia bocataurensis Dwyer
  • Pentagonia bonifaziana Cornejo
  • Pentagonia breviloba L.Andersson & Rova
  • Pentagonia carniflora Cornejo & Rova
  • Pentagonia chocoensis Cornejo
  • Pentagonia clementinensis Cornejo
  • Pentagonia costaricensis (Standl.) W.C.Burger & C.M.Taylor
  • Pentagonia donnell-smithii (Standl.) Standl.
  • Pentagonia dwyeriana C.M.Taylor
  • Pentagonia gambagam Hammel & Aguilar
  • Pentagonia gigantifolia Ducke
  • Pentagonia gomez-lauritoi Hammel
  • Pentagonia grandiflora Standl.
  • Pentagonia gymnopoda (Standl.) Standl.
  • Pentagonia hirsuta Standl.
  • Pentagonia imparipinnata Cornejo
  • Pentagonia involucrata C.M.Taylor
  • Pentagonia lanciloba Cornejo
  • Pentagonia lobata C.M.Taylor
  • Pentagonia macrophylla Benth., syn. Pentagonia orthoneura
  • Pentagonia magnifica K.Krause
  • Pentagonia microcarpa L.Andersson & Rova
  • Pentagonia nuciformis Dwyer
  • Pentagonia osaensis C.M.Taylor
  • Pentagonia osapinnata Aguilar, N.Zamora & Hammel
  • Pentagonia pachiteana Cornejo
  • Pentagonia parvifolia Steyerm.
  • Pentagonia pinnatifida Seem.
  • Pentagonia rubriflora D.R.Simpson
  • Pentagonia sanblasensis C.M.Taylor
  • Pentagonia spathicalyx K.Schum., syn. Pentagonia peruviana
  • Pentagonia subauriculata Standl.
  • Pentagonia subsessilis L.Andersson & Rova
  • Pentagonia tapacula Cornejo
  • Pentagonia tinajita Seem.
  • Pentagonia villosula L.Andersson & Rova
  • Pentagonia wendlandii Hook.f.
  • Pentagonia williamsii Standl.
  • Pentagonia wurdackii Steyerm.

References
  1. "Pentagonia Benth". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 12 March 2022.
  2. Cornejo, Xavier (July 2006). "Two New Species of Pentagonia (Rubiaceae-Hippotideae) from Ecuador and Peru". Harvard Papers in Botany. Harvard University Herbaria. 11 (1): 19–24. doi:10.3100/1043-4534(2006)11[19:tnsopr]2.0.co;2. JSTOR 41761837. S2CID 86065378.
  3. "Pentagonia Benth". The International Plant Names Index. Retrieved 12 March 2022.
  4. "Wayback Machine has not archived that URL". Retrieved 12 July 2005.


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