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 not disarticulating, gray-green to yellow-green, flattened, circular to broadly obovate, 12–22 × 12.5–20 cm, sometimes wider than long, ± tuberculate, glabrous;

areoles 6–9 per diagonal row across midstem segment, prominent, circular to elliptic, 4–7 × 3–7 mm;

wool tan to brown, aging gray.

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, reddish yellow to red-brown;

abaxial ones sometimes whitish;

adaxial spines often yellow;

major spines (0–)4–8(–9) per areole, usually deflexed, sometimes spreading, particularly on stem segment margins, subterete to flattened or channeled adaxially, sometimes curved, stiff, the longest 40–60 mm.

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

crowded in extended marginal crescent, nearly encircling areole, and less dense subapical tuft obscured by long dense wool, yellow to yellow-brown, 1–6(–12) mm.

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

filaments and anthers yellow;

style bright red;

stigma lobes yellow.

inner tepals yellow sometimes with faint basal reddish blush, broadly obovate, 22–35 mm, apiculate;

filaments and anthers yellow;

style white;

stigma lobes greenish white.

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

areoles 45–60, evenly distributed on fruit.

dull red with greenish flesh, ovate to obovate, 32–50 × 15–30 mm, fleshy, glabrous, spineless;

umbilicus 4–6 mm deep;

areoles 28–46.

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

girdle protruding to 1 mm.

yellowish, reniform to subcircular, 4–5 mm diam., sides flattened, smooth;

girdle protruding 0.5–0.8 mm.

= 88.

= 22.