Flora of North America species comparison

(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.

11–18(–28) per areole, at most areoles, moderately to wholly obscuring stems, spreading or erect, whitish, pale yellow to pinkish tan to reddish, aging brown or black, terete or abaxial spines basally flattened, grading in length, the longest porrect to reflexed, 2–2.5(–3.5) cm, with 0–6 bristlelike spines at areole margins;

sheaths slightly baggy, whitish becoming yellow to golden apically.

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

in thin adaxial crescent, yellow or tan to rusty, 0.5–6 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 greenish yellow, often with tips reddish abaxially, spatulate, 22–30 mm, apiculate to emarginate-apiculate;

filaments yellow-green to green;

anthers yellow to orange-yellow;

style cream to yellow, sometimes basally greenish;

stigma lobes greenish cream, cream or 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.

yellowish, drying tan, globose, tuberculate, budlike with spines similar to those of stem segments but slightly shorter, often reflexed;

proximal tubercles slightly elongated if fruits fertile;

umbilicus 4–5 mm deep;

areoles 22–32(–40).

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

girdle usually narrow, not protruding.

pale yellow, angular-suborbicular, flattened to slightly warped, 4.5–6 × 4.5–5.7 mm, sides with 3–5 depressions;

girdle smooth, not protruding.

= 22.