Flora of North America species comparison

(6–)10–17(–22) per areole, accompanied by 0–5 short bristlelike spines at areole margins, at most areoles, most prominent in adaxial ones, much interlaced with those of adjacent areoles, obscuring stems, sometimes brushlike;

major abaxial spines whitish, yellow to tan, usually subterete to flattened, spreading to deflexed, the longest 20–30(–45) mm;

major adaxial spines erect or spreading, white, pale yellow, or tan to brown (rarely deep red-brown), terete, the longest 22–35(–50) mm;

sheaths whitish with yellow to golden tips, baggy.

(4–)6–18(–24) per areole, at most areoles, interlacing with spines of adjacent areoles, pale tan (rarely yellowish), pinkish to red-brown;

abaxial spines erect to usually deflexed, terete, often flattened basally, 8–19 mm;

adaxial spines erect or spreading, subterete; ± bristlelike spines at areole abaxial margins;

sheaths persisting, uniformly whitish, not baggy.

conspicuous in broad adaxial crescent, yellow, 3–4(–5) mm.

in inconspicuous adaxial tuft, yellow to tan, aging gray, 1–2 mm.

inner tepals light green to yellow-green, sometimes suffused with maroon or rose, spatulate, 20–23 mm, emarginate-apiculate;

filaments greenish white or yellow, sometimes suffused with bronze or rose, but not red;

anthers yellow;

style and stigma lobes whitish, cream to light green.

inner tepals rose to red-purple, bronze-purple, or yellow, sometimes pale greenish yellow or whitish, spatulate, 18–35 mm, emarginate-apiculate;

filaments deep purple to pink-purple, sometimes green;

anthers pale yellow;

style white or pink to purple distally;

stigma lobes white to cream.

tan at maturity, obconic to subspheric, 13–23 × 11–20 mm, dry, tuberculate, densely spiny, sometimes burlike, with apical flange around deep umbilicus;

basal tubercles not markedly longer than distal ones;

areoles 16–24(–36).

rarely proliferating, yellow, sometimes tinged reddish to purplish, broadly cylindric, 20–50 × 17–30 mm, fleshy, strongly tuberculate, spineless;

areoles 28–50(–62);

tubercles longer in distal portion of fruit;

umbilicus to 10 mm deep.

pale yellow, angular to squarish in outline, warped, 4–6 × 3.5–5 mm, sides smooth, each with 2–4 large depressions;

girdle smooth (rarely with very narrow ridge).

pale yellow, suborbicular to oval in outline, flattened to warped, 4–5 × 3–4 mm, sides with 0–3 large depressions;

girdle smooth.

= 22.

= 22.