Southwestern United States, Mexico, Central America, South America
Europe, Northern Africa, Western Asia
Mexican oregano,Mediterranean oregano
A. campestre var. campestre - downy fruit
A. campestre var. leiocarpum (Opiz) Wallr. (syn. A. campestre subsp. leiocarpum) - hairless fruit
Stony hillsides
Forest margins, gardens, Suburban areas, Woods
8, 9, 10, 11, 12, 13, 19, 20, 21, 22, 23, 24
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17