Flora of North America species comparison

(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.

0–2(–3) per areole, sparsely distributed along stem, usually deflexed, pale yellow or red-brown aging black, stout, the longest 0.8–3.5(–5) cm;

sheaths loose fitting, yellowish brown.

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

in adaxial tuft and marginal, encircling areole, pale yellow.

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.

inner tepals green- or orange-bronze, spatulate, 17–20 mm, apiculate;

filaments dark green-bronze;

anthers yellow;

style whitish basally to light orange apically;

stigma lobes very pale green.

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.

green, becoming yellowish apically, sometimes tinged red to purplish at areoles, commonly sterile, then narrow, tuberculate, to 2.5 cm, fertile ones stipitate, obconic, 20–50 × 15–35 mm, fleshy, becoming smooth, spineless;

umbilicus 3–4 mm deep;

areoles 15–17(–34).

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

girdle smooth.

pale yellow, angularly circular to oblong, thick, 3–5 mm diam., lumpy;

girdle smooth, broad, not protruding.

= 22.

= 66.