Flora of North America species comparison

segments not easily detached, dark dull green, often cross wrinkled when stressed, flattened, obovate to circular, 5–11 × 3.5–7.5 cm, fleshy (to flabby and cross wrinkled when stressed), tuberculate, glaucous;

areoles 5–6(–8) per diagonal row across midstem segment, oval to subcircular, 2–4 mm diam.;

wool tan.

(0–)1–4 per areole, usually in distal areoles, erect to spreading, white to red-brown, acicular, straight, terete or 1 flattened, ± stout (0.5 mm diam. at base), longest to 60 mm.

absent or vestigial, yellow.

in dense tuft, pale yellow, tan to red-brown, aging brown, to 5 mm.

few, scattered, poorly developed, yellow, aging gray to blackish, to 1.5 mm, covered by white, cottony wool.

inner tepals yellow with red basal portions, 25–40 mm;

filaments pale yellow;

anthers yellow;

style white;

stigma lobes cream to yellowish.

inner tepals brilliant yellow throughout, fading orange to red, 25–30 mm;

filaments white to green;

anthers yellow;

style white;

stigma lobes bright light green.

green to yellowish to dull red, stipitate, elongate-obovoid, 25–40 × 15–28 mm, fleshy, glabrous;

areoles 16–28.

pink- to red-purple with red pulp, pyriform, 30 × 25 mm, fleshy, glabrous, spineless;

areoles 18–25, usually crowded near apex, long, white woolly.

tan, subcircular, 4–5 mm, thickish, warped;

girdle broad, protruding to 0.5 mm.

tan, subcircular, 2 mm diam.;

girdle broad, projecting 0.5 mm.

= 44.

= 22.