A new Ambrosia (Asteraceae) from the Baja California Peninsula, Mexico

  • José Luis León de la Luz Herbario, Centro de Investigaciones Biológicas del Noroeste
  • Jon P. Rebman San Diego Natural History Museum
keywords: Compositae, Franseria, Sierra de La Giganta, plant diversity, floristics


Ambrosia humi León de la Luz et Rebman, sp. nov., a member of the Franseria alliance, is here described and illustrated. This taxon is apparently endemic only to Mesa de Humí in the Sierra de La Giganta of Baja California Sur, Mexico. This new species is a subshrub with three-parted leaves that are gently scented and viscid when fresh, and it has a bur-like pistillate head, at maturity it is densely covered with strong, sharp, aculeate spines.


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A new <em>Ambrosia</em> (Asteraceae) from the Baja California Peninsula, Mexico


León de la Luz J.L., Rebman J., Domínguez-León M. and Domínguez-Cadena R. 2008. The vascular flora and floristic relationship of the Sierra de La Giganta in Baja California Sur, México. Revista Mexicana de Biodiversidad. 79:29-65

Lawalrée A. 1947. Les Ambrosia adventice en Europe occidentale. Bulletin Jardin. Botanique des Bruxelles 18:306-315.

Miao B., Turner B., Simpson B., and Mabry T. 1995. Chloroplast DNA studies of the genera Ambrosia s. l. and Hymenoclea (Asteraceae): systematic implications. Plant Systematic and Evolution 194:241-255.

Payne, W.W. 1964. A re-evaluation of the genus Ambrosia (Compositae). Journal of the Arnold Arboretum. 45:401-438.

Payne W.W., Raven P.H., and Kyhos D.W. 1964. Cromosome numbers in Compositae. IV Ambrosieae. American Journal of Botany 51:419-424.

Rydberg P.A. 1922. Ambrosiaceae. North American Flora 33: 3-44. Shreve F. and Wiggins I.L. 1964. Vegetation and Flora of the Sonoran Desert, Vol 1. Stanford University Press. Stanford, Cal.

Strother, J.L. 2006. Ambrosia. En: Flora of North America Editorial Committee eds. Flora of North America: North of Mexico vol 21 Magnoliophyta: Asteridae, Part 8: Asteraceae, Part 3 pp. 10-18. Oxford University Press. USA.

Strother, J.L. and Baldwin, B.G. 2002. Hymenoclea are ambrosias (Compositae). Madroño 49:143-144.

Wiggins, I.L. 1980. Flora of Baja California. Stanford University Press. Stanford.

How to Cite
León de la Luz, J. L., & Rebman, J. P. (2019). A new Ambrosia (Asteraceae) from the Baja California Peninsula, Mexico. Botanical Sciences, 86, 65-70. https://doi.org/10.17129/botsci.2322