Tall trees, without any spines, prickles or thorns; with large opposite leaves of almost leathery texture, smooth or hairy.[1][2][3] Presence of interpetiolar stipules, triangle-shaped.[1][3] The large flowers are arranged in terminal cymes; the calyx is tubular, while the corolla can be trumpet-shaped or short-cylindrical, with 5-6 lobes.[1][2][3] The stamens are located at the top of the corolla.[1] The fruit is an almost globose or ovoid berry, smooth, fleshy, with a thick rind.[1][2][3] The seeds are large and flat.[1][2][3]
Taxonomy
The species from Madagascar, originally described by Drake, do not belong to the Rubiaceae tribeGardenieae like the New World Genipa species, but in the tribe Octotropideae.[4] Those species were transferred to the genus Hyperacanthus.[4]
Genipa spruceana is considered doubtfully distinct from Genipa americana.[5]
^ abcdefFrancis, Macbride, J.; E., Dahlgren, B. (1936). "Flora of Peru /". Fieldiana. v.13:pt.6:no.1 [Rubiaceae]: 106.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ abcdStandley, Paul (1938). "Flora of Costa Rica". v.18:pt:4: 1299. {{cite journal}}: Cite journal requires |journal= (help)
^ abcdefLiogier, Alain H. (1985). Descriptive Flora of Puerto Rico and Adjacent Islands. La Editorial, UPR. p. 97. ISBN9780847723386.
^ abcRakotonasolo, Franck; Davis, Aaron (2006). "Six Species of Madagascan Genipa Transferred to Hyperacanthus (Rubiaceae-Gardenieae) and New Data on General Morphology, Placentation and Ovary Structure in Hyperacanthus". Taxon. 55 (2): 387โ396. doi:10.2307/25065586. JSTOR25065586.
^Grandtner, M. M.; Chevrette, Julien (2013). Dictionary of Trees, Volume 2: South America: Nomenclature, Taxonomy and Ecology. Academic Press. p. 263. ISBN9780123969545.