Flora of North America species comparison

erect, long ovoid, less than 30 × 4.5–11 cm;

ribs 10–16;

crests slightly undulate;

areoles 12–20(–25) mm apart.

9–14(–16) per areole, straight, straw colored, ± translucent, often glassy white tinted with yellow, darkest spines sometimes tan or brown;

radial spines 7–14 per areole, 15–40 mm;

central spines 2–4(–5) per areole, abaxial central spine strongly projecting, all central spines terete or somewhat flattened, 57–100 mm.

8–12 × 10–12.5(–15) cm;

flower tube 25–35 × 15–35 mm;

flower tube hairs 1–1.5 mm;

inner tepals rose-pink to magenta, darkest proximally and/or centrally, 55–60(–80) × 12–25 mm, tips white to greenish, relatively thin and delicate;

anthers yellow;

nectar chamber ± 5–8 mm.

bright pinkish brown, with characteristic reticulate pattern of slightly darker or greener color between flattened tubercles, usually 35–40(–50) mm, pulp white to pale pink (varying on same plant).

= 44.