Flora of North America species comparison

segments green, broadly oblong to ovate to narrowly elliptic, (20–)4–60 × 2–3+ cm, low tuberculate;

areoles 7–11 per diagonal row across midstem segment, rhombic to subcircular, 2–4(–5) mm diam.;

wool brown.

segments easily detached to firmly attached, green, flattened, narrowly to broadly obovate, 3.5–9 × 2.5–5 cm, low tuberculate, glabrous;

areoles 4–6(–7) per diagonal row across midstem segment, oval, 3.5 × 2.5 mm;

wool white.

1–6 per areole, absent or very highly reduced, or in marginal to nearly all areoles, erect to spreading, whitish, tan, or brown, setaceous only or setaceous and subulate, straight to slightly curved, basally angular-flattened, 1–10(–40) mm; 0–2 small bristlelike deflexed spines to 5 mm.

in most areoles, straight, acicular, terete;

major spines 0–1 per areole, reflexed to porrect (rarely ascending), gray-white to brown, (15–)25–40(–60) mm; intermediate spines 0–3, reflexed, 12–20 mm;

minor spines 2–4, reflexed, yellow-gray, 3–6 mm.

along adaxial margin of areole and small, inconspicuous tuft, yellowish, aging brown, less than 2 mm.

loosely packed, in small tuft or crescent at adaxial margin of areole, yellowish, inconspicuous, to 4 mm.

inner tepals yellow to orange throughout, 25–50 mm;

filaments and anthers yellow;

style bright red;

stigma lobes yellow.

inner tepals yellow throughout, 30–45 mm;

filaments white to red;

anthers yellow;

style white;

stigma lobes green.

yellow to orange to purple, 50–100 × 40–90 mm, fleshy to ± juicy, glabrous, usually spineless;

areoles 45–60, evenly distributed on fruit.

rarely set, top-shaped to barrel-shaped, 15–20 × 15 mm, glabrous;

areoles 10–15, most bearing 3–12 spines or distal spines bearing 1–3 spines.

pale tan, subcircular, 4–5 mm diam., warped;

girdle protruding to 1 mm.

tan, large, 5–7 mm;

girdle protruding 1–1.5 mm.

= 88.

= 66.