Flora of North America species comparison

segments not disarticulating, blue- to yellow-green, sometimes tinged maroon-purple, flattened, spatulate to broadly obovate or subcircular, thick, 5–22(–35) × 2–13.5(–16) cm, nearly smooth, papillose to puberulent (rarely glabrous);

areoles 4–16(–19) per diagonal row across midstem segment, circular to elliptic, 3–5 × 3 mm;

wool white to tan, aging gray.

segments not disarticulating, green, flattened, narrowly to broadly obovate, 6.5–15 × 3–11 cm, low tuberculate, glabrous to papillate;

areoles (4–)7–8 per diagonal row across midstem segment, subcircular, 3–3.5 mm diam.;

wool white.

0(–8) per areole, when present, usually in distal areoles, spreading, yellow, straight, acicular, 5–25 mm.

(0–)1–3(–4) per areole, in distal 20–50(–70)% of areoles, porrect to reflexed, yellow-gray to whitish gray, sometimes brown in basal 1/2, straight, sometimes curved, usually flattened, slender, longest (35–)50–70 mm.

numerous, nearly filling areoles, yellow to red-brown or dark brown, to 3 mm.

conspicuous, in broad, dense crescent at adaxial margin of areole, red-brown, to 4 mm, sides sometimes converging into columns.

inner tepals pink to magenta throughout (rarely white), 25–40 mm;

filaments red-magenta (rarely pale);

anthers yellowish;

style white to pink;

stigma lobes white to cream.

inner tepals magenta throughout, 25–35 mm;

filaments yellow to red-orange to magenta;

anthers yellow;

style white;

stigma lobes green.

maturing tan, 20–40 × 15–23 mm, dry at maturity, puberulent, spineless (except in var. treleasei);

umbilicus 5–12 mm deep;

areoles 24–76.

tan, 20–30 × 18–20 mm, maturing dry, glabrous to papillate;

areoles (16–)24–34, distal areoles bearing 1–4 short spines.

yellowish to tan, ± subspheric but angular, thick, 6.5–9 × 6.5–7 mm, sides smooth or bearing 1–3 depressions;

girdle protruding to 1 mm.

tan, oval to subcircular, 6.5–8 mm, warped;

girdle protruding 1.5–2 mm.

= 88.