Flora of North America species comparison

6–8 per areole (1–2 bristlelike spines) increasing with time, well distributed along stem, slightly interlacing with spines of adjacent areoles, short;

abaxial spines usually reflexed, whitish, pinkish to red-brown, lightly flattened, the longest 10–18 mm;

adaxial spines erect or spreading, rich red-brown, gray coated basally, subterete, 6–11 mm;

sheaths grayish, tipped brown or yellow to golden Glochids in small adaxial tuft or crescent, dark yellow, to 1 mm.

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 thin adaxial crescent, yellow or tan to rusty, 0.5–6 mm.

inner tepals yellow-green, yellow to gold or bronze, or red to rose or magenta, spatulate, apiculate;

filaments yellowish green;

anthers yellow;

style whitish to pale bronze;

stigma lobes whitish.

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.

often proliferating, yellowish green or tinged red to purple, often stipitate, obovate, 25–40 × 10–20 mm, leathery-fleshy, tuberculate or smooth, essentially spineless;

tubercles prominent, at first, subequal in length or proximal ones longer, fertile ones swelling and becoming smooth;

umbilicus to 9 mm deep;

areoles 20–30.

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).

yellowish, polygonal in outline, warped, 3.5–5.5 × 2.5–5 mm, sides nearly flattened with depressions and protrusions to angular subspheric;

girdle smooth or in a groove.

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.

= 22.