[The name Pima rhatany is a bit of a mystery but it seems likely that it relates to the Pima tribe of native Americans who were known to use it medicinally. Botanical.com says "The name Rhatany is said to describe the creeping character of the plant, in the language used by the Peruvian Indians, while its Spanish name is derived from its dental properties." And an article in Economic Botany by Beryl Simpson says that "Rhatany, the name given to several species of Krameria, figured prominently in European and Euro-American medicine between 1820 and 1920. Uses for rhatany were numerous but generally centered around the astringent properties of the tanniniferous root extracts. Evidence suggests that the adoption of Krameria as a medicinal plant resulted from the advocacy of its use by Hipólito Ruiz following his return to Europe from Perú in 1797. Native American uses known at the time of Ruiz’s writing were different from those espoused in Europe by the Spanish botanist. Traditional Pre-Colombian uses of Krameria species by native peoples of North and South America are difficult to assess because records of use appear to have been influenced by the uses devised later by Europeans. There is little doubt of native uses of the roots for chewing sticks and as a source of dye." Krameria is named for either Johann Georg Heinrich Kramer, 1684-1744, or his son William Heinrich Kramer, ?-1765, or both.

Desert pincushion
Chaenactis stevioides
Asteraceae

Engelmann's hedgehog cactus
Echinocereus engelmannii
Cactaceae

Flat-topped buckwheat
Eriogonum plumatella
Polygonaceae

East Mojave buckwheat
Eriogonum fasciculatum var. flavoviride
Polygonaceae

Joshua tree
Yucca brevifolia
Agavaceae