Echinocereus scopulorum

Stems single, cylindric, 10 to 40 cm long, nearly hidden by the closely set spines; ribs 13 or more, low, somewhat tuberculate; areoles circular, devoid of wool (at least in areoles of the previous year); spines highly colored, pinkish or brownish with blackish tips, in age, however, gray and stouter; radials somewhat spreading; centrals 3 to 6, similar to the radials; flower-buds or some of them appearing near the top of the plant, developing very slowly; flowers with a delicate rose perfume, widely spreading when fully expanded, 9 cm broad; tube 2 cm long, broadly funnelform, bearing greenish tubercles; inner perianth-segments 4 cm long, rose or purplish rose in color, much paler on the outside, sometimes nearly white, rather loose and usually only in about 2 rows, oblanceolate to spatulate, erosely dentate, acute; stamens greenish; style-stout, much longer than the stamens; stigma-lobes linear, 12.

E. scopulorum

E. scopulorum

E. scopulorum