Acacia houstoni (L'Hér.) Willd.

Family: Leguminosae

Genus: Acacia


From Bot. Reg. The present species is very commonly mistaken in our gardens for the East Indian grandiflora, which differs in having the wings of the leaf in 17 or 18 pairs, each wing consisting of 30 or 40 pairs of leaflets, each leaflet ovate at the base, and entirely distinct from the opposite one. In Houstoni the leaf has seldom more than six or eight pairs of wings, the leaflets of which are ascendent and oppositely confluent...

In our hothouses it grows to a tall tree-like shrub, flowering freely when of sufficient age... The beauty of the bloom consists in the long capillary crimson stamens, which spread themselves out into a broad inverted hollow cone, of from two inches to two and a half in depth.


Published in Sp. Pl., ed. 4 4(2): 1062 in 1806.

Basionym Mimosa houstoni L'Hér.

Synonym of Calliandra houstoniana (Mill.) Standl.

Also published in Bot. Reg. 2: 98 in 1816.

From Bot. Reg. Native of South America, where it was collected by Dr. William Houstoun, and sent to this country in 1729. The drawing was made from a plant of more than seven feet high, which bloomed in the hothouse of Mr. John Hall, at Notting Hill, from whose collection Mr. Edwards has been liberally supplied with specimens of several interesting plants.

Other names listed in Bot. Reg.:

Anneslia falcifolia Salisb. - synonym

Mimosa houstoni L'Hér. - basionym

Mimosa houstoniana Mill. - synonym, basionym of Calliandra houstoniana (Mill.) Standl.

Gleditsia inermis L. - species of Acacia (Linn. Typ.), synonym of Gleditsia triacanthos f. inermis (L.) C.K.Schneid. (ARS-GRIN), synonym of Gleditsia triacanthos L. (PlantList).

Sources of Information

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