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.

0–1(–2) per areole, usually few along margins of stem segments, deflexed to erect, pale yellow to horn colored (aging reddish brown), straight to slightly curved, acicular, terete, the longest to 40 mm, usually shorter.

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

dense in crescent at adaxial edge of areole, nearly encircling areoles, and in subapical tuft, of even height, yellow to tan, aging brown, to 5 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 yellow throughout, fading orangish, 25–45 mm;

filaments pale yellow throughout or pale yellow proximally, white distally;

anthers pale yellow;

style white;

stigma lobes light 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.

purplish, green inside, obovoid to barrel-shaped, 25–45 × 20–30 mm, fleshy, glabrous, spineless;

areoles 34–44(–54).

tan, 3.5–4.5 mm diam., thickish;

girdle protruding to 1 mm.

tan, 3.5–5 × 3–4 mm, sides convex, often bearing bumps;

girdle protruding 0.5 mm.

= 22.