Agastache mearnsii


Agastache mearnsii
San Luis Mountain Giant Hyssop

Agastache mearnsii is 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. Its distribution is apparently restricted to Mexico, occurring in west-central Chihuahua and adjacent Sonora, and in extreme north-western Chihuahua. It is commonly found in dry canyon bottoms, wooded steep slopes in humus, in oak woodlands,or in the transitional zone with forest of Pinus ponderosa at elevations of 1,700-2,500m. This specie is rated for USDA Zones 8-10.


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