Flora of North America species comparison

segments not disarticulating, dark or bright shiny green, wrinkling when stressed, circular to broadly oblong to obovate, 5–17.5 × 4–12 cm, fleshy, usually tuberculate, glabrous;

areoles 4–6 per diagonal row across midstem segment, oval to circular, 2–4 mm diam., not raised, sometimes somewhat sunken;

wool tan to brown.

often absent or 1–2(–3) per areole, spreading, whitish to brownish, terete, straight, and usually stout, 25–60 mm; occasionally also 1 deflexed spine present.

1–5(–8) per areole, at most areoles, spreading, white with red base, becoming dark red-brown with pale tips, aging gray, stout, usually curved, elliptic in cross section, longest to 70 mm.

in dense crescent of adaxial edge of areole and in dense tuft overtopping crescent in age, yellow to red-brown, to 4 mm.

closely spaced in crescent at adaxial edge of areole, along margins of areoles, and in subapical tuft, yellow, to 4 mm.

inner tepals pale to bright yellow throughout, 20–30 mm diam.;

filaments yellow to orange;

anthers pale yellow to cream;

style and stigma lobes white.

inner tepals deep yellow with red basal portions, to 35 mm;

filaments yellow;

anthers pale yellow;

style cream;

stigma lobes yellow-green.

greenish, tardily becoming apricot to brownish red, elongate, 30–50 × 12–20 mm, fleshy, tapering at base;

pulp green and sour, becoming reddish and sweet under ideal conditions;

areoles 10–18.

often sterile, sometimes proliferating, yellow to red, ovoid to obconic, 28–32 × 13–22 mm, usually fleshy, becoming dry, tuberculate, glabrous;

areoles 20–30, distal areoles bearing 1–4 red-brown and white spines, to 25 mm.

tan, 3.5–4.5 mm diam., thickish;

girdle protruding to 1 mm.

few, tan, subcircular to irregularly shaped, 4–5 mm diam.;

girdle protruding to 1 mm.

= 44.