Flora of North America species comparison

segments usually alternate, gray-green or purplish, 2–8 × 0.3–0.5 cm;

tubercles linear, drying as elongate, riblike wrinkles, 1.1–2(–3) cm;

areoles broadly elliptic, (1–)1.5–3.5 × 0.7–2 mm;

wool white to yellow, aging gray.

(5–)8–15(–30) per areole or spineless to nearly spineless, usually at most areoles, not obscuring stems, spreading, straight or slightly curved, silver to yellow to usually ± red or tan to brown, stout, terete or sometimes flattened basally, 8–30(–40) mm subequal;

sheaths silver to yellow to usually tan to dirty white, yellow tipped.

0–1(–3) per areole, usually in apical areoles to well distributed, erect, flexible, straight or arching upward or downward, red-brown with gray to whitish coat, tips yellow, aging red-brown, terete, angular-flattened basally, the longest (4–)14–45 mm;

sheaths gray to purple-gray with yellow to red-brown tips or yellow throughout.

in dense adaxial tuft, pale yellow, 0.5–3 mm.

in adaxial tuft or crescent to encircling areole, yellow or reddish brown, 1–3(–5) mm.

inner tepals dark pink to magenta to red-magenta, obovate, apiculate, 15–35 mm;

filaments green basally to pink to magenta distally;

anthers yellow;

style light green basally or pink to red-magenta apically;

stigma lobes green or cream.

inner tepals pale yellow to greenish yellow, sometimes tipped red, narrowly obovate, 5–8 mm, acute, apiculate;

filaments greenish yellow;

anthers yellow;

style yellow;

stigma lobes greenish yellow.

not proliferating, yellow, obovoid, 24–45 × 20–40 mm, fleshy, tuberculate, spineless;

areoles 18–30;

tubercles nearly equal in length or longer in proximal portion of fruit, prominent (occasionally smooth at maturity);

umbilicus 7–14 mm deep.

occasionally proliferating, yellow to scarlet (rarely green, sometimes tinged purple, becoming yellow), sometimes stipitate, obovoid, 9–15(–27) × 6–7(–12) mm, fleshy, smooth, spineless;

umbilicus 2–4 mm deep;

areoles 16–20.

yellow-tan, subcircular to angled, warped, 2.5–4 mm diam., sides smooth to slightly lumpy;

girdle usually narrow, not protruding.

pale yellow, suborbicular to squarish and crenate in outline, warped, 3–4.5 mm diam., sides smooth, each with 1–3 large depressions;

girdle smooth or with very narrow ridge.

= 22, 33, 44.