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.

segments not disarticulating, green to blue-green, flattened, elliptic to obovate, 6–15 × 5–12 cm, low tuberculate, papillate;

areoles 7–11 per diagonal row across midstem segment, subcircular to elliptic, 3–5 × 2–4 mm;

wool tan.

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.

absent or only l spine in 1–few distal areoles, deflexed, yellow to gray, straight, terete, to 10 mm.

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

in dense crescent at adaxial margin of areole and dense subapical tuft, yellow, to 6 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 (magenta in introgressed plants), 25–30 mm;

filaments white to yellow;

anthers yellow;

style white;

stigma lobes 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.

tan to gray, 25–30 × 15–20 mm, dry, spineless;

areoles 12–18.

tan, 3.5–4.5 mm diam., thickish;

girdle protruding to 1 mm.

tan, subspheric to irregularly shaped, flattened, very large, 9–12 mm diam.;

girdle thick, protruding 2.5–3.5 mm.

= 66.