Vachellia cornigera

Vachellia cornigera, commonly known as bullhorn acacia (family Fabaceae), is a swollen-thorn tree and myrmecophyte native to Mexico and Central America. The common name of "bullhorn" refers to the enlarged, hollowed-out, swollen thorns (technically called stipular spines) that occur in pairs at the base of leaves, and resemble the horns of a steer. In Yucatán (one region where the bullhorn acacia thrives) it is called "subín", in Panama the locals call them "cachito" (little horn). The trees are commonly found in wet lowlands