Trixis inula, the tropical threefold,[2] 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.[3][4][5][6][7]

Trixis inula
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Trixis
Species:
T. inula
Binomial name
Trixis inula
Crantz
Synonyms[1]
  • Inula trixis L.
  • Perdicium corymbosum Sessé & Moc. ex D.Don [Illegitimate]
  • Perdicium havanense Kunth
  • Perdicium laevigatum Berg
  • Perdicium radiale L. [Illegitimate]
  • Prenanthes fruticosa Willd. ex Less.
  • Solidago fruticosa Mill.
  • Tenorea berteroi Colla [Illegitimate]
  • Tenorea calyculata Bertero ex Colla
  • Trixis adenolepis S.F.Blake
  • Trixis chiantlensis S.F.Blake
  • Trixis corymbosa D.Don
  • Trixis deamii B.L.Rob.
  • Trixis ehrenbergii Kunze
  • Trixis frutescens P.Browne ex Spreng.
  • Trixis frutescens P.Browne
  • Trixis frutescens var. angustifolia DC.
  • Trixis frutescens var. glabrata Less.
  • Trixis frutescens var. latifolia Less.
  • Trixis frutescens var. obtusifolia Less.
  • Trixis glabra D.Don
  • Trixis havanensis (Kunth) Spreng.
  • Trixis laevigata Lag.
  • Trixis mexicana Moc. ex Less. [Illegitimate]
  • Trixis radialis (L.) Lag. [Illegitimate]
  • Trixis radialis (L.) Kuntze [Illegitimate]
  • Trixis radialis var. pubescens Kuntze
  • Trixis radialis var. subglabra Kuntze

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.[8][9][10]

References

edit
  1. ^ The Plant List
  2. ^ NRCS. "Trixis inula". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 14 December 2015.
  3. ^ Flora of North America v 19 p 75
  4. ^ 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.
  5. ^ 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.
  6. ^ Nelson, C. H. 2008. Catálogo de las Plantas Vasculares de Honduras 1–1576.
  7. ^ 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.
  8. ^ Crantz, Heinrich Johann Nepomuk von. Institutiones Rei Herbariae 1: 329. 1766.
  9. ^ 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.
  10. ^ Richardson, A. 1995. Plants of the Rio Grande Delta. University of Texas Press, Austin. ISBN 0-292-77070-7