Flora of North America species comparison

segments green, broadly oblong to ovate to narrowly elliptic, (20–)4–60 × 2–3+ cm, low tuberculate;

areoles 7–11 per diagonal row across midstem segment, rhombic to subcircular, 2–4(–5) mm diam.;

wool brown.

segments green or sometimes reddish to purple, usually flattened, circular, elliptic, ovate, lanceolate, or obovate to oblanceolate, 2–60(–120) × 1.2–40 cm, nearly smooth to tuberculate, glabrous or pubescent;

areoles usually elliptic, circular, or obovate, 3–8(–10) × 1–7(–10) mm;

wool white, gray, or tan to brown, aging white or gray to black.

1–6 per areole, absent or very highly reduced, or in marginal to nearly all areoles, erect to spreading, whitish, tan, or brown, setaceous only or setaceous and subulate, straight to slightly curved, basally angular-flattened, 1–10(–40) mm; 0–2 small bristlelike deflexed spines to 5 mm.

0–15+ per areole, white, yellow to brown, red-brown to gray, or black, sometimes partly to wholly white chalky (chalkiness disappearing when wet), aging gray to dark brown to black, with epidermis intact, not sheathed, acicular to subulate, sometimes setose or with hairlike bristles, terete to angular-flattened, to 75(–170) mm, tips sometimes paler or yellow.

along adaxial margin of areole and small, inconspicuous tuft, yellowish, aging brown, less than 2 mm.

in adaxial crescent at margin of areole, in tuft or encircling areole margin, white to yellow to brown, or red-brown, aging white to brown or red-brown.

inner tepals yellow to orange throughout, 25–50 mm;

filaments and anthers yellow;

style bright red;

stigma lobes yellow.

bisexual or sometimes functionally staminate, radially symmetric;

outer tepals green to yellow with margins tinged color of inner tepals;

inner tepals pale yellow to orange, pink to red or magenta, rarely white (unicolored) or with base of a different color (bicolored), oblong to spatulate, emarginate-apiculate;

nectar chamber simple, open, not covered by proximal thickening style.

yellow to orange to purple, 50–100 × 40–90 mm, fleshy to ± juicy, glabrous, usually spineless;

areoles 45–60, evenly distributed on fruit.

sometimes proliferating (sprouting from another fruit), if fleshy, green, yellow, or red to purple or, if dry, tan to gray, straight, sometimes stipitate, clavate to cylindric, ovoid, or obovoid to subspheric, 10–120 × 8–120 mm, fleshy to juicy or dry, smooth or tuberculate, spineless or spiny, sometimes burlike.

pale tan, subcircular, 4–5 mm diam., warped;

girdle protruding to 1 mm.

pale yellow to tan or gray, generally circular to reniform, flattened (discoid) to subspheric, angular to squarish, sometimes warped, 2–7 × 2–7 mm, glabrous, commonly bearing 1–4 large, shallow depressions due to pressures from adjacent developing seeds;

girdle protruding 0.3–3.5 mm, forming ridge or flat wing, or not protruding.

yellow, grains reticulate or foveolate (opuntioid type).

= 11.

= 88.