This Orcutt's woody aster Xylorhiza orcuttii was pointed out as having unusually white petals.
Dyeweed (Emory's indigo) bush Psorothamnus emoryi
I determined using Google Street View that this is the bus terminal in Catamarca
Desert sand verbena Abronia villosa
Leaves on the Dyeweed (Emory's indigo) bush Psorothamnus emoryi. The name 'dyeweed' comes from the persistent iodine color that stains your fingers if you damage a leaf.







































Close-up of flower on a Dyeweed (Emory's indigo) bush Psorothamnus emoryi