Echinocereus rayonesensis is a species of cactus native to Mexico.[1]
Echinocereus rayonesensis grows with many shoots and branches at ground level. The upright, cylindrical shoots are long and have a diameter of . They are hidden by the dense thorns. There are ten to 15 ribs that are tuberculated. The hair-like or slender thorns on them are glassy white to yellowish. The five to nine downward-facing central spines are long. The 15 to 25 radial spines, occasionally more, are long.
The broadly funnel-shaped flowers are somewhat purple-magenta in color and have a white throat. They appear on the sides of the shoots, are long and reach in diameter. The elongated fruits are olive green to brown.[2]
Echinocereus rayonesensis is widespread in the Mexican state of Nuevo León in the Rayones Valley.
The first description by Nigel Paul Taylor was published in 1988.[3] The specific epithet "rayonesensis" refers to the occurrence of the species in the Mexican Valley of Rayones.