Flora of North America species comparison

segments not disarticulating, bright green, flattened, circular to elliptic-obovate, (5–)7–10(–15) × (3–)4–8(–10) cm, low tuberculate, puberulent;

areoles (9–)11–16 per diagonal row across midstem segment, subcircular, 2–5 mm diam.;

wool white to tan, aging gray.

(0–)2–8 per areole, at most areoles to only distal 1/4 of stem segment, or essentially absent, brown to white, straight, curved, or spirally twisted;

major central spines deflexed or spreading, brown to red-brown (to blackish), or partly to wholly gray to tan, subulate, usually flattened near base, 30–80 mm;

abaxial spines usually 1–3, deflexed, white, flattened, shorter, to 20 mm.

absent.

dense in crescent at adaxial edge of areole and subapical tuft, tan to red-brown, to 5 mm.

numerous, nearly filling areole, usually yellow or whitish, sometimes reddish brown, to 3 mm.

inner tepals yellow with red basal portions (rarely entirely pink to red), 30–40 mm;

filaments greenish basally, pale yellow to white distally;

anthers yellow;

style white;

stigma lobes green to yellow-green.

inner tepals bright yellow throughout, aging peach, 25–30 mm;

filaments and style white;

anthers yellowish;

stigma lobes dark green.

wine red to purple, with greenish flesh (sometimes reddish and ± juicy), not long stipitate, obovate to barrel-shaped, 30–50 × 20–30 mm, fleshy, glabrous, spineless;

areoles 18–24.

red, spheric to ovoid, 20–25 × 12–16 mm, fleshy, pubescent, spineless;

areoles 35–50.

tan, subcircular, 4–5 mm diam., evidently notched, warped;

girdle protruding 1 mm.

tan, nearly spheric (slightly flattened), 1–1.2 mm (perhaps infertile);

girdle protruding to 0.5 mm.

= 66.

= 22.