Bouvardia erecta
4 km north of Tehuacán, Puebla
along road to Origaba, hills
east of highway.  Showing general habitat.
Photo by E. H. Sallee, Nov 1974

Bouvardia erecta
4 km north of Tehuacán, Puebla
along road to Origaba, hills east
of highway. Close-up of plant and
flowers. Photo by E. H. Sallee, Nov 1974

Bouvardia ternifolia
Showing general habitat in open Yucca scrub of the Chihuahuan desert near Saltillo, and in disturbed places along road in Coahuilla, and close-up of red flowers.

Bouvardia ternifolia
Plants gathered and bundled by the local residents near Saltillo, Coahuilla who were paid by fresh weight in a USDA ARS procurement of 5 tons of plant material for isolation of the compound—bouvardin—needed for preclinical antitumor studies by the National Cancer Institute.  The man holding the scale, weighing the bundles of Bouvardia is Edmund Sallee.

USDA ARS Travel Report on Bouvardia ternifolia by A. S. Barclay and Richard Spjut, July 16–August 26, 1974.