Zenker's hackberry (Celtis zenkeri)

African Celtis Ohia

Celtis zenkeri (African Celtis): Morphology, Habitat and Ecology

Towering over the sub-Saharan African landscapes, Celtis zenkeri commands attention as a magnificent canopy tree. Reaching impressive heights between 30 and 50 meters, this fast-growing giant thrives in a variety of environments from deciduous woodlands to lush rainforests. It demonstrates remarkable vigor, with its trunk capable of expanding by up to one centimeter in diameter annually.

The extensive geographical range of this species spans from Guinea in the west to Ethiopia in the east, stretching southward into Angola and Tanzania. Throughout these diverse ecosystems, the tree provides crucial resources for local wildlife and structural stability to the forest architecture.

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 zenkeri (Zenker's hackberry)

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Morphology

The imposing structure of Celtis zenkeri is characterized by a straight, massive trunk and a highly developed canopy. Its rapid growth rate allows it to quickly emerge above competing vegetation, securing access to vital sunlight in dense forest environments.

During its reproductive phase, the tree produces small, inconspicuous flowers that eventually give way to fleshy fruits. These botanical features are specifically adapted to facilitate interactions with local frugivorous fauna, ensuring successful seed distribution across vast distances.

Flowering season

February to April and August to September, depending on the region

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Interesting facts

The ecological strategy of Celtis zenkeri relies heavily on endozoochory, a fascinating mutualistic relationship with forest animals. Birds and primates actively seek out the tree's fruits, consuming them and subsequently dispersing the seeds far from the parent plant.

Its impressive growth speed makes it a significant contributor to biomass accumulation in tropical regions. In areas like Côte d'Ivoire, researchers have documented vertical growth rates of up to 15 centimeters per year.

Geography of distribution

  • Angola
  • Benin
  • Burundi
  • Democratic Republic of the Congo
  • Ethiopia
  • Guinea
  • Côte d'Ivoire
  • Cameroon
  • Liberia
  • Nigeria
  • Republic of the Congo
  • Central African Republic
  • Sierra Leone
  • Sudan
  • Tanzania
  • Togo
  • Uganda
  • Ghana

Sources

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

Technical Information

External Databases: GBIF, POWO, Tropicos

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