Catalan common name : Acàcia de tres punxes.
Spanish common name : Acacia de tres espinas. Acacia de tres puas. Acacia negra.
General distribution : North American
Flowering time : June. July.
Life-forms : Macrophanerophyte.
Observations : Grown as an ornamental plant and for the formation of thorny hedges.
Origen : Nord Amèrica.
Location on-campus UIB : Poc freqüent, es pot observar en front de Cas Jai.
Description : A tree 12-15m in height; it has leaves with a pubescent rachis. These pinnate leaves have 10-15 pairs of oblong-lanceolate leaflets, 2-3.5cm in length, are slightly crenate, serrate, with a pubescent central vein on the lower side. The bi-pinnate leaves have with 4-7 pairs of pinnae. The thorns are simple or branched, 6-10cm long, and grow on the trunk and the main branches. The greenish-white, shortly pedicellate flowers grow in racemes that are 5-7 cm long. The pod is 30-45cm long.
Flowering period : May-june