Chromolaena bigelovii explained

Chromolaena bigelovii called Bigelow's false thoroughwort, or Bigelow's thoroughwort, is a North American species of flowering shrub in the family Asteraceae. It is native to northeastern Mexico (Coahuila, Nuevo León, San Luis Potosí) and the US State of Texas.^{[1] [2]}

Chromolaena bigelovii is a shrub up to 150 cm (5 feet) tall. Flower heads are produced in groups of 3, but sometimes they grow one at a time. The heads contain blue or white disc florets but no ray florets.^{[3] [4]}

Notes and References

1. http://bonap.net/MapGallery/County/Chromolaena%20bigelovii.png Biota of North America Program 2014 county distribution map
2. Turner, B. L. 1997. The Comps of Mexico: A systematic account of the family Asteraceae, vol. 1 – Eupatorieae. Phytologia Memoirs 11: i–iv, 1–272
3. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066333 Flora of North America, Bigelow’s false thoroughwort, Chromolaena bigelovii (A. Gray) R. M. King & H. Robinson
4. https://www.biodiversitylibrary.org/item/91651#page/75/mode/1up Gray, Asa. 1859. Report on the United States and Mexican Boundary Botany 2(1): 75