Whip-branched hackberry (Celtis flagellaris)

Silhouette: T. Michael Keesey / License

Celtis flagellaris: Taxonomy, Morphology, and Ecological Role

Known among botanists as a remarkable element of Neotropical flora, Celtis flagellaris thrives across diverse tropical and subtropical landscapes. Often treated as a synonym of Celtis brasiliensis in modern taxonomic treatments, this robust woody species contributes significantly to local forest ecosystems. It belongs to the hackberry genus within the family Cannabaceae, which has undergone significant reclassification from its traditional placement in Ulmaceae.

Its presence spans the canopy and sub-canopy layers of various biomes, adapting to both humid rainforests and drier woodland edges. Researchers and ecologists value this species for its ecological interactions, including providing shelter and food resources for native fauna.

Taxonomy

  • ∟ царство Plantae
  • ∟ division Tracheophytes (Vascular Plants)
  • ∟ subdivision Spermatophytes (Seed plants)
  • ∟ Angiosperms
  • ∟ mesangiosperms
  • ∟ eudicots
  • ∟ Superrosids
  • ∟ rosids
  • ∟ order Rosales
  • ∟ family Cannabaceae (Hemp family)
  • ∟ genus Celtis (Hackberry)
  • ∟ species Celtis flagellaris (Whip-branched hackberry)

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Morphology

The physical characteristics of Celtis flagellaris align closely with those of its accepted taxonomic counterpart, Celtis brasiliensis. It typically develops as a shrub or medium-sized tree, characterized by a well-branched canopy and somewhat rough bark. The leaves are simple, alternate, and often display the distinct asymmetrical base typical of the genus Celtis.

Foliage is generally ovate to lanceolate, with margins that can be serrate to nearly entire, adapting to the specific microclimate of the plant's habitat. The flowers are small, inconspicuous, and wind-pollinated, giving way to fleshy drupes. These small, rounded fruits mature from green to yellowish or dark hues, offering a vital food source for local bird populations.

Interesting facts

Members of the genus Celtis, including Celtis flagellaris, have undergone major taxonomic revisions over recent decades. Previously classified in the family Ulmaceae, they were moved to Cannabaceae following in-depth molecular phylogenetic analyses. This redefinition highlights the importance of modern genetic tools in precise botanical classification.

Geography of distribution

  • Brazil
  • Colombia
  • Peru
  • Bolivia
  • Paraguay
  • Argentina

Sources

  • Plants of the World Online (POWO)
  • Global Biodiversity Information Facility (GBIF)
  • Catalogue of Life

Technical Information

External Databases: POWO, Tropicos

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