Flora of North America species comparison

0–1(–2) per areole, usually few along margins of stem segments, deflexed to erect, pale yellow to horn colored (aging reddish brown), straight to slightly curved, acicular, terete, the longest to 40 mm, usually shorter.

absent or vestigial, yellow.

dense in crescent at adaxial edge of areole, nearly encircling areoles, and in subapical tuft, of even height, yellow to tan, aging brown, to 5 mm.

few, scattered, poorly developed, yellow, aging gray to blackish, to 1.5 mm, covered by white, cottony wool.

inner tepals yellow throughout, fading orangish, 25–45 mm;

filaments pale yellow throughout or pale yellow proximally, white distally;

anthers pale yellow;

style white;

stigma lobes light green.

inner tepals brilliant yellow throughout, fading orange to red, 25–30 mm;

filaments white to green;

anthers yellow;

style white;

stigma lobes bright light green.

purplish, green inside, obovoid to barrel-shaped, 25–45 × 20–30 mm, fleshy, glabrous, spineless;

areoles 34–44(–54).

pink- to red-purple with red pulp, pyriform, 30 × 25 mm, fleshy, glabrous, spineless;

areoles 18–25, usually crowded near apex, long, white woolly.

tan, 3.5–5 × 3–4 mm, sides convex, often bearing bumps;

girdle protruding 0.5 mm.

tan, subcircular, 2 mm diam.;

girdle broad, projecting 0.5 mm.

= 22.

= 22.