Image of Perityle batopilensis

Description:

in habitat on roadcut in volcanic rhyolite tuff at upper canyon rim. Original ID as a rayless P. gentry, later confirmed as P. batopilensis by AM Powell. This site on the old gravel switchback road has now been destroyed by a new paved highway to Batopilas that also greatly limits access to many former rich roadside collecting sites in the canyon.