Guatteria blainii, known in Cuba as haya minga, is an evergreen tropical tree native to the humid montane and lowland forests of the Greater Antilles, including Cuba, Hispaniola, and Puerto Rico. It forms a straight-boled canopy or subcanopy tree with aromatic bark and glossy, leathery leaves; its specific epithet blainii honors José Blain y Cervantes (1810–1878), a Cuban naturalist and botanist who explored the flora of western Cuba.
Originally described in 1866 by August Heinrich Rudolf Grisebach as Asimina blainii and transferred to the genus Guatteria by Ignatz Urban in 1905, this species belongs to the custard-apple family (Annonaceae).
Guatteria blainii grows as a medium-sized evergreen tree reaching 8 to 20 meters in height, supported by a cylindrical trunk clothed in dark, fibrous, aromatic inner bark. Its twigs bear alternate, two-ranked (distichous) leaves without stipules.
The leaf blades are elliptic to oblong-lanceolate, coriaceous (leathery), and dark glossy green above, tapering to an acute apex and turning characteristically dark brown or blackish when dried in herbarium specimens.
Solitary or paired flowers emerge from the leaf axils on slender pedicels lined with tiny bracts:
In rural Cuba and Puerto Rico, the tough, fibrous inner bark and straight, resilient timber of Guatteria blainii (haya minga) have been used locally for rural construction posts, tool handles, and rustic cordage. The tree is also maintained in Caribbean botanical gardens and forest reserves as a native shade and reforestation species for humid limestone and montane habitats.
Surviving in the dense, shaded understory of Antillean cloud and karst forests requires precise coordination between flower mechanics and seed dispersers:
Taxon Synonyms: Asimina neglecta, Asimina blainii, Uvaria blainii, Cananga blainii, Guatteria cubensis
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