Mariosousa

Life-forms

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Fabales

Familia: Fabaceae
Subfamilia: Caesalpinioideae
Tribus: Mimoseae
Genus: Mariosousa
Species: M. acatlensis – M. centralis – M. compacta – M. coulteri – M. dolichostachya – M. durangensis – M. gentryi – M. heterophylla – M. mammifera – M. millefolia – M. russelliana – M. salazarii – M. sericea – M. usumacintensis
Name

Mariosousa Seigler & Ebinger Novon 16(3): 415–419. (2006)

Mariosousa coulteri (Benth.) Seigler & Ebinger Novon 16(3): 417. (2006)

References
Primary references

Seigler, D.S., Ebinger, J.E. & Miller, J.T. 2006. Mariosousa, a new segregate genus from Acacia sl (Fabaceae, Mimosoideae) from Central and North America. Novon: A Journal for Botanical Nomenclature 16(3): 413-420. DOI: 10.3417/1055-3177(2006)16[413:MANSGF]2.0.CO;2 Reference page.

Additional references

Seigler, D.S. & Ebinger, J.E. 2018. New Combinations in Parasenegallia and Mariosousa (Fabaceae: Mimosoideae). Phytologia 100(4): 256–259. PDF Reference page.

Links

Govaerts, R. et al. 2025. Mariosousa in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2025 Apr. 4. Reference page.
International Plant Names Index. 2019. Mariosousa. Published online. Accessed: Aug 19 2019. Reference page.
Tropicos.org 2019. Mariosousa. Missouri Botanical Garden. Published online. Accessed: 19 Aug 2019. Reference page.

Hassler, M. 2020. Mariosousa. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2020. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2020 Aug 19. Reference page.

Mariosousa is a genus of 13 species of flowering plants in the family Fabaceae. It belongs to the mimosoid clade of the subfamily Caesalpinioideae.[3] Members of this genus were formerly considered to belong to the genus Acacia.[1]

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:[1][4]

Mariosousa acatlensis (Benth.) Seigler & Ebinger—Acatlan acacia
Mariosousa centralis (Britton & Rose) Seigler & Ebinger—Central American acacia
Mariosousa compacta (Rose) Seigler & Ebinger
Mariosousa coulteri (Benth.) Seigler & Ebinger—Coulter acacia
Mariosousa dolichostachya (S.F. Blake) Seigler & Ebinger—longspike acacia
Mariosousa durangensis (Britton & Rose) Seigler & Ebinger—Durango acacia
Mariosousa heterophylla (Benth.) Seigler & Ebinger—palo blanco, Willard acacia
Mariosousa mammifera (Schltdl.) Seigler & Ebinger
Mariosousa millefolia (S. Watson) Seigler & Ebinger—Milfoil wattle, Santa Rita acacia
Mariosousa russelliana (Britton & Rose) Seigler & Ebinger
Mariosousa salazarii (Britton & Rose) Seigler & Ebinger
Mariosousa sericea (Martens & Galeotii) Seigler & Ebinger
Mariosousa usumacintensis (Lundell) Seigler & Ebinger

Mariosousa willardiana is considered a synonym of Mariosousa heterophylla.
References

Seigler DS, Ebinger JE, Miller JT (2006). "Mariosousa, a New Segregate Genus from Acacia s.l. (Fabaceae, Mimosoideae) from Central and North America". Novon. 16 (3): 413–420. doi:10.3417/1055-3177(2006)16[413:MANSGF]2.0.CO;2. S2CID 86112681.
Maslin B. "List of Acacia sensu lato species". World Wide Wattle. Retrieved 31 December 2013.
The Legume Phylogeny Working Group (LPWG). (2017). "A new subfamily classification of the Leguminosae based on a taxonomically comprehensive phylogeny". Taxon. 66 (1): 44–77. doi:10.12705/661.3. hdl:10568/90658.
Seigler DS, Ebinger JE (2018). "New Combinations in Parasenegalia and Mariosousa (Fabaceae: Mimosoideae)" (PDF). Phytologia. 100 (4): 256–259.