Mariosousa
Mariosousa is a genus of 13 species of flowering plants in the family Fabaceae. It belongs to the mimosoid clade of the subfamily Caesalpinioideae. Members of this genus were formerly considered to belong to the genus Acacia.
Restricted in range to Central America, Mexico, and the southwestern United States, members of the genus are trees or shrubs bearing alternate, bipinnately compound leaves—each with a swelling at the base of the petiole—and white- to cream- or yellow-colored flowers. The flowers are typically borne in elongated, bottle brush–like spikes. The fruits that later replace these flowers are markedly flattened pods.
Species
The genus Mariosousa comprises the following species:Mariosousa acatlensis Seigler & Ebinger—Acatlan acaciaMariosousa centralis Seigler & Ebinger—Central American acaciaMariosousa compacta Seigler & EbingerMariosousa coulteri Seigler & Ebinger—Coulter acaciaMariosousa dolichostachya Seigler & Ebinger—longspike acaciaMariosousa durangensis Seigler & Ebinger—Durango acaciaMariosousa heterophylla Seigler & Ebinger—palo blanco, Willard acaciaMariosousa mammifera Seigler & EbingerMariosousa millefolia Seigler & Ebinger—Milfoil wattle, Santa Rita acaciaMariosousa russelliana Seigler & EbingerMariosousa salazarii Seigler & EbingerMariosousa sericea Seigler & EbingerMariosousa usumacintensis Seigler & EbingerMariosousa willardiana is considered a synonym of ''Mariosousa heterophylla.''