Flora of North America species comparison

diffuse.

segments clavate, 5–9 × 2–3 cm;

tubercles prominent, 15–25 mm, narrow, 4–6 times longer than wide, obscured by interlacing spines;

areoles 5 mm in diam.;

wool grayish white.

14–17(–22) per areole, mostly in distal areoles or ± uniformly distributed, white to brownish, tipped yellow;

major 5–6 abaxial spines strongly deflexed, flattened, longest white margined, 25–45(–58) mm;

central spine brown or white, long tapered;

major ca. 5 adaxial spines divergent, blackish or brown to tan, subterete, angular-flattened at base, longest to 42 mm.

adaxial in areoles, yellow, 5–8 mm.

inner tepals pale yellow with narrow reddish midstripes, 15–22 mm;

filaments pinkish or greenish to pale yellow;

style whitish to pale yellow or dull pinkish;

stigma lobes white, greenish white or pale yellow.

yellow, 35–55 × 15–20 mm, fleshy, spineless, densely yellow glochidiate;

areoles 35–52.

yellowish white, 4–4.5 × 3.5–4.5 mm, smooth.

= 22.