Agastache rupestris (Thread-Leaf Giant-Hyssop)

Agastache rupestris (Thread-Leaf Giant-Hyssop)

This Agastache differs from others by the following features: the calyx tube is more than 4 mm long, the teeth more that 1/4 the total length of the calyx; stems are suffrutescent with exfoliating bark; mature leaves are lanceolate-linear, 6-15 times longer than wide; the median lobe of the corolla is several-toothed or laciniate.
Southwestern New Mexico to central and south-central Arizona.
On vegetation-covered igneous boulders and sandy soil at base of protected north slopes with Populus, Juglans, Prunus, etc., in the upper oak-savannah, pinyon-juniper or lower Pinus ponderosa zone, 1,500-2,200 m (Sanders 1987); N-facing slope of andesite (Knight 1683); rock and gravel loam of hillside, W slope, 6,300 ft. (Hutchins 9170).
Important Literature

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

Wooton, E.O. and P.C. Standley. 1915. Flora of New Mexico. Contributions from the U.S. National Herbarium 19:1-794.

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