Vachellia sphaerocephala

Vachellia sphaerocephala, the bull's horn thorn or bee wattle, is a plant species in the family Fabaceae. The name comes from the shape of the thorns which do indeed resemble the horns of a bull. The tree has a strong, symbiotic relationship with a species of stinging ant, Pseudomyrmex ferruginea.^[2] This tree is endemic to Mexico.^[3]

Vachellia sphaerocephala
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Caesalpinioideae
Clade:	Mimosoid clade
Genus:	Vachellia
Species:	V. sphaerocephala
Binomial name
Vachellia sphaerocephala (Schltdl. & Cham.) Seigler & Ebinger[1]
Synonyms
Acacia sphaerocephala Schltdl. & Cham.