Salvia microphylla neurepia was formerly given varietal status by Epling. This variety is found mostly in the center of the range, and many collected forms have deltoid leaves. These include the deltoid-leaved form I collected in Hidalgo at a fairly low elevation, the form designated as neurepia collected by Yucca-Do, Hoja Grande (also by Yucca-Do), Orange Door (Yucca-Do again), and San Carlos Festival (Yucca-Do again). Wild Watermelon was collected at a very high location by Martin Grantham on Cerro Potosi, the highest peak in northeastern Mexico at a subalpine level.

They are all very tough and cold tolerant except my Hidalgo collection, which has good heat and humidity tolerance.

Hot Lips is a true microphylla from a high elevation in Oaxaca, and the Huntington form with the thick, soft stems and minty scent is also from Oaxaca or Belize and is the most tender of all microphyllas in cultivation right now. Hot lips is one of the most tough and durable forms. These last two look a lot alike except for the adaption to high and low elevation.

Thanks Richard. Maybe I'll take some of those high mountain forms and have them associate with the low elevation forms and see what results.