Spiniest hackberry (Celtis spinosissima)

Silhouette: T. Michael Keesey / License

Celtis spinosissima: Taxonomic Details and Overview

Documented in major botanical repositories, Celtis spinosissima forms part of a diverse group of arborescent and shrubby plants. Taxonomists rely on verified herbarium specimens to delineate the boundaries of this specific taxon. Ongoing botanical surveys contribute to the systematic understanding of its anatomical characteristics.

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 spinosissima (Spiniest hackberry)

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Morphology

The compact and rigid branching base of the plant features greatly thickened nodes from which barbed spines filled with rigid cellulose and lignified material emerge prolifically, deterring any intrusion or occasional herbivorous grazing. Its greenish leaves perfectly preserve the typical oval, alternate, and evergreen appearance characteristic of other representatives of the botanical family, maintaining a rough or sharply serrated texture as they mature in the underlying microclimate.

The minute, inconspicuous flowers bloom exclusively in the axils of new foliage and, when adequately nourished, mature to produce an abundance of drupe-like fruits with a slightly pulpy exocarp. Despite the modest appearance of these internally calcified seeds, the tiny casing concentrates essential fats and key micronutrients vital for the continuous dispersal of the species across the endemic hydrographic basin of the area.

Interesting facts

The aggressive mechanical barrier ornamenting its silhouette has sparked fruitful debates, theses, and numerous paleontological hypotheses in contemporary biological science departments over the years. The central premise seriously suggests that its formidable sharp defense evolved during a period of intense pressure from massive herbivory by South American megafauna during the earliest times of Earth's glacial era.

Geography of distribution

  • Vereinigte Staaten von Amerika
  • Mexico
  • Brazil
  • Colombia
  • Venezuela
  • Argentina

Sources

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

Technical Information

External Databases: GBIF, POWO, Tropicos

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