(A.Gray) Britton & Rose
Caesalpinia mexicana is a species of flowering plant in the pea family, Fabaceae. Common names include Mexican Holdback, Mexican Caesalpinia, and Tabachín del Monte. It is native to the extreme lower Rio Grande Valley of Texas in the United States and south to central Mexico. Its range in Mexico includes the northeast and further south along the Gulf coast as well as the Pacific coast in Nayarit, Jalisco, Colima, and a small portion of Sinaloa.
Mexican Caesalpinia is a small evergreen tree or large shrub, reaching a height of 3–4.6 m (9.8–15.1 ft) and a spread of 1.8–3 m (5.9–9.8 ft). Leaves are bipinnately-compound and dark green. Each leaf has five to nine pinnae 4–9 cm (1.6–3.5 in) in length. Pinnae are composed of four to five leaflets that are 1–2.5 cm (0.39–0.98 in) long and 0.7–1.3 cm (0.28–0.51 in) wide. Yellow, slightly fragrant flowers are produced on 7.6–15.2 cm (3.0–6.0 in) terminal spikes of 10 to 30. Blooming takes place from February to July, often continuing to October. The fruit is a dehiscent tan or yellow seedpod 5.1–7.6 cm (2.0–3.0 in) in length.
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- "Caesalpinia mexicana A. Gray". TROPICOS. Missouri Botanical Garden. Retrieved 2009-11-25.
- "Caesalpinia mexicana A. Gray Mexican holdback". PLANTS Database. United States Department of Agriculture. Retrieved 2009-12-03.
- Nokes, Jill (2001). How to Grow Native Plants of Texas and the Southwest (2 ed.). University of Texas Press. pp. 151–152. ISBN 978-0-292-75573-4.
- "Mexican Caesalpinia, Mexican Poinciana". Benny Simpson's Texas Native Trees. Texas A&M University. Retrieved 2009-01-28.
- "Taxon: Caesalpinia mexicana A. Gray". Germplasm Resources Information Network. United States Department of Agriculture. 2007-08-28. Retrieved 2009-11-25.
- Little, Jr., Elbert L. (1976). Atlas of United States Trees. Volume 3, Minor Western Hardwoods. US Government Printing Office. Library of Congress No. 79-653298. Map 27-N & Map 27-SW, Caesalpinia mexicana
- Irish, Mary (2008). Trees and Shrubs for the Southwest: Woody Plants for Arid Gardens. Timber Press. pp. 141–142. ISBN 978-0-88192-905-8.
- Richardson, Alfred (1995). Plants of the Rio Grande Delta. University of Texas Press. pp. 103–104. ISBN 978-0-292-77070-6.
- Gilman, Edward F (October 1999). "Caesalpinia mexicana Mexican Caesalpinia" (PDF). IFAS Extension. University of Florida. Retrieved 2010-11-23.
- "Curve-winged Metalmark Emesis emesia (Hewitson, 1867)". Butterflies and Moths of North America. Retrieved 2009-11-29.
- "Caesalpinia mexicana Mexican bird of paradise". Arid Plant List. University of Arizona. 2006-03-16.
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