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.

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

absent.

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

numerous, nearly filling areole, red-brown to white, 1–2.5 mm.

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 yellow throughout, aging apricot to orange, obovate-apiculate, 25–38 mm;

filaments whitish;

anthers yellow;

style green;

stigma lobes dark 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.

red with green flesh, obovate, 20–35 × 15–23 mm, fleshy, short pubescent, spineless;

umbilicus 5–7 mm deep;

areoles (30–)36–52.

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.

yellowish, elliptic to subcircular, angular, 3–3.5 × 2.5–2.8 mm, thick, sides smooth or with 1–2 depressions;

girdle protruding about 0.3 mm.

= 22.