Agastache mearnsii (San Luis Mountain Giant-Hyssop)

Agastache mearnsii (San Luis Mountain Giant-Hyssop)

Photograph by A. Flores M. (1996)
Common Name
San Luis Mountain Giant-Hyssop
Rare Plant Conservation Scorecard Summary
Overall Conservation Status Documented Threats Actions Needed

No Information

Taxonomic clarification of NM specimens, Status surveys on abundance, distribution and threats


An herb differing from other Agastache by having attenuate calyx teeth 1/4 the total length of the calyx or more, herbaceous stems, a calyx tube that is straight or nearly so and 2-4 mm in diameter when pressed, with straight and conspicuous costae.


Documented from Hidalgo and Grant counties in New Mexico. Occurring in Mexico in west-central Chihuahua and adjacent Sonora, and in extreme northwestern Chihuahua.


Dry canyon bottoms with heavy Quercus rugosa, Cupressus, Fraxinus overstory (Spellenberg & Soreng 6818); wooded steep slopes in humus in oak woodlands or in the transitional zone with forest of Pinus ponderosa, 1,700-2,500 m. (Sanders 1987).

Important Literature

Martin, W.C. and C.R. Hutchins. 1981. A Flora of New Mexico, vol. 2. J. Cramer, Vaduz.

Wooton, E.0. and P.C. Standley. 1915. Flora of New Mexico. Contributions from the U.S. National Herbarium 19:1-793.

Kearney, T.H. and R.H. Peebles. 1969. Arizona Flora, 2nd ed. (with supplement by J.T. Howell, Elizabeth McClintock, et al.). Univ. California Press, Berkeley. 1085 pp.

Sanders, R.W. 1987. Taxonomy of Agastache section Brittonastrum (Lamiaceae-Nepeteae). Systematic Botany Monographs 15:1-92.

Information Compiled By
Richard Spellenberg 1998

For distribution maps and more information, visit Natural Heritage New Mexico