Stems 0-3-branched, green to dark green, ovoid or cylindric (sometimes narrowly so), 3-15 × 2-8 cm; ribs (6-)13(-14), tubercles prominent on ribs. Spines dense but not obscuring stems; radial spines 6-12(-16) per areole, spreading, white, 3-18 × 0.3-1.2 mm, pubescent; central spines (1-)3-6(-7) per areole, terete to angled, pubescent in young and early reproductive plants; abaxial central spines 1-3 per areole, tan to brown, reddish, or black, irregularly-or strongly-hooked, 20-55 mm; lateral spines (0-)2(-4) per areole, white, tan, red, or reddish brown, usually hooked, sometimes flattened and ribbonlike, 10-40 mm; adaxial spine 1 per areole, tipped white or dark, flattened and ribbonlike, (5-)35-60(-70) × 1.5-2.5(-3.5) mm. Flowers funnelform to campanulate, 2-4 × 1.5-3 cm; outer tepals with reddish brown midstripes and violet-pink or reddish purple margins, usually oblanceolate, 15-20 × 6-10 mm, margins irregularly toothed, apex mucronate; inner tepals lavender to reddish purple, oblanceolate to narrowly oblanceolate, 15-20 × 4-6 mm, apex minutely toothed; filaments red-violet or pink; anthers yellow; styles minutely and sparsely papillate. Fruits dehiscent along 2-4 vertical slits, green to pink or pale red, barrel-shaped, 9-15 × 8-13 mm, dry; scales few, membranous, slightly scarious-margined. Seeds black, 2-2.5 × 3-4 mm; testa with rounded papillae.
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