Stems unbranched or in clusters, cylindric or elongate cylindric, 10-40(-45) × 5-9 cm; ribs 13-17, well developed, tubercles not evident on ribs. Spines dense, obscuring stems; radial spines 10-15(-18) per areole, white, straight, flat, 20-50 mm, glabrous; central spines 9-12 per areole, 5-8 hooked, others straight, terete to angled; abaxial and lateral central spines 6-8 per areole, red or reddish brown (rarely yellow), some hooked, (30-)56-100 × 0.7-1.2 mm; adaxial central spines usually 3 per areole, white, usually curved or twisted, flat, usually 37-86(-130) × 1.7-3.4 mm. Flowers with spicy, pungent odor, funnelform, 5-10 × 5-9 cm; outer tepals with greenish purple midstripes and rose-purple or magenta margins, cuneate-spatulate, usually 15-30 × 6-9 mm; inner tepals rose-purple to magenta (rarely white), largest tepals ovate-lanceolate, 24-45 × 9-12 mm; filaments greenish yellow; anthers cream; style grooved, not papillate. Fruits irregularly dehiscent at base, green, tan, or red, barrel-shaped, 22-50 × 12-25 mm, dry at maturity; scales few, white fringed. Seeds black, 2.7-3.7 × 2-2.5 mm, shiny; testa with fine, rounded papillae.
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