[2] Pterocereus gaumeri grows tree-shaped with long, slender shoots, has little or no branches and reaches heights of up to 8 meters.

The approximately ten thorns are gray or reddish black and up to 5 cm (2.0 in) long.

Its pericarpel and floral tube are covered with fleshy, leaf-like scales that have recurved tips, as well as some wool and a few bristles.

[3] Pterocereus gaumeri is distributed in the Mexican states of Yucatán, Chiapas and Veracruz.

[4] The specific epithet gaumeri honors the American botanist and naturalist George Franklin Gaumer (1850–1929), who discovered the species.