Downy Spiny Hackberry (Celtis aculeata var. pubescens)

Pubescent spiny hackberry Juá-mirim
Silhouette: T. Michael Keesey / License

Celtis aculeata var. pubescens - Pubescent Spiny Hackberry

Adorning the tropical and subtropical landscapes of the Americas, this spiny woody climber or shrub stands out due to its distinctively velvety foliage. Its sprawling branches scramble over surrounding vegetation in dry forests and disturbed habitats. The plant plays a vital ecological role by providing shelter and sustenance to 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 aculeata (Prickly hackberry)
  • variety Celtis aculeata var. pubescens (Downy Spiny Hackberry)

Living Pulse

Morphology

This woody plant exhibits a scrambling growth habit, often climbing with the help of recurved spines located on its branches. The twigs are covered in dense, soft hairs, a defining feature of this botanical variety. Simple, alternately arranged leaves feature serrated margins and a soft, pubescent underside.

The small, inconspicuous flowers are greenish-yellow and develop in axillary clusters. They give way to globose, fleshy drupes that ripen to an orange or yellow hue. These fruits contain a single, hard-shelled seed capable of surviving avian digestion.

Flowering season

Spring and summer

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Name
Dec

Applications

This wild species is primarily valued for its ecological functions within its native range. It supports biodiversity through several key contributions:

  • Wildlife food source: The sweet, fleshy drupes serve as an essential food supply for migratory and resident birds.
  • Habitat protection: Dense, thorny branches provide secure nesting sites for small birds, shielding them from larger predators.
  • Soil stabilization: The robust root system helps bind soil along forest margins and recovering riverbanks.

Interesting facts

The hooked thorns along its bines act like natural grappling hooks, allowing it to scale tall forest trees. By hitchhiking on taller vegetation, it secures access to sunlight in dense forest understories. Additionally, the seeds are widely dispersed by frugivorous birds, ensuring successful colonization of new areas.

Geography of distribution

  • Brazil
  • Argentina
  • Paraguay

Sources

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

Technical Information

External Databases: GBIF, POWO, Tropicos

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