Trixis inula explained

Trixis inula, the tropical threefold, is a plant species native to Texas, Mexico, Central America, northern South America, and the West Indies. It is found on open, sandy sites such as roadsides, thorn scrub, thickets, etc.^{[1] [2] [3] [4] [5]}

Trixis inula is a much-branched shrub up to 300 cm (10 feet) tall. It has lanceolate to elliptic leaves up to 17 cm (7 inches) long. Yellow flower heads are borne in paniculate arrays.^{[6] [7] [8]}

Notes and References

1. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250006002 Flora of North America v 19 p 75
2. D'Arcy, W.G. 1987. Flora of Panama. Checklist and Index. Part 1: The introduction and checklist. Monographs in systematic botany from the Missouri Botanical Garden 17: v–xxx, 1–328.
3. Davidse, G., M. Sousa-Peña, S. Knapp & F. Chiang Cabrera. 2014. Asteraceae. 5(2): ined. In G. Davidse, M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera (eds.) Flora Mesoamericana. Universidad Nacional Autónoma de México, México.
4. Nelson, C. H. 2008. Catálogo de las Plantas Vasculares de Honduras 1–1576.
5. Idárraga-Piedrahita, A., R. D. C. Ortiz, R. Callejas Posada & M. Merello. (eds.) 2011. Flora de Antioquia: Catálogo de las Plantas Vasculares 2: 9–939. Universidad de Antioquia, Medellín.
6. Crantz, Heinrich Johann Nepomuk von. Institutiones Rei Herbariae 1: 329. 1766.
7. Anderson, C. E. 1972. A monograph of the Mexican and Central American species of Trixis (Compositae). Memoirs of the New York Botanical Garden 22(3): 1–68.
8. https://books.google.com/books?id=vF_1X65cDxYC&dq=Trixis+inula&pg=PA302 Richardson, A. 1995. Plants of the Rio Grande Delta. University of Texas Press, Austin.