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.

(0–)1–2(–4) per areole, at most areoles, straight to slightly arched, commonly deflexed, not obscuring stem, yellow to gray, tipped yellow, acicular, the longest 1–3 cm.

in adaxial tuft, yellow, 0.5–2.5 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 basally to reddish bronze, tinged magenta apically, spatulate-apiculate, 15–25 mm;

filaments greenish basally to bronze distally;

anthers yellow;

style greenish bronze;

stigma lobes cream.

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.

green becoming red, obovoid to cylindric, 13–34 × 10–20 mm, fleshy, low tuberculate to smooth, spineless;

tubercles subequal;

umbilicus 3–6 mm deep;

areoles 16–28.

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.

tan, squarish to oval, 4–5 × 3.5–4 mm, warped, sides smooth to lumpy;

girdle broad, low-ridged.

= 22.

= 44.