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] Pentagonia are typically small monopodial trees up to 8 meters tall, but some are much-branched trees up to 18 meters tall. The genus is noteworthy for its large, entire and strongly carinate, interpetiolar stipules and large leaf blades, up to at least 200 cm long, with the leaf surfaces being distinctly and closely striate with fine epidermal fibers.[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

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

References

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  1. ^ a b c "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. 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. ^ Hammel, Barry E. (11 August 2015). "Three new species of Pentagonia (Rubiaceae) from Southern Central America, one foreseen, two surprising". Phytoneuron. 46: 1–13.