Corm ovoid to ovoid-globose, 3.5-6.5 × 3- 5 (-6) cm; tunics submembranous to subcoriaceous (to coriaceous), often many layers, deep reddish-brown to mid or dark brown, produced into a stout neck, 6.5-13 (-18.5) cm long, 1.5-2.5 (-3) cm in diam. Cataphyll yellowish-white, often ± greenish in upper patt and purplish at mucronate apex, 6.5-13 (-18) cm above corm, not or only slightly exceeding the tunic neck. Leaves 3-4 (most commonly 3), hysteranthous, congested (sometimes slightly spread) on stem projecting ea. 4-8 cm above ground, sheath completely fused, blade (8.5-) 10-19 (-26) × (1.6-) 2.5-6 (-8.5) cm, length/width ratio usually ea. 3-5, suberect to erecto-patent-arcuate, (lanceolate or oblong to) narrowly oblong-elliptic to elliptic, subobtuse to obtuse, rather flat with blunt keel on the back, often slightly plicate, hardly to somewhat twisted lengthwise, mid to deep green, margins indistinctly to narrowly cmtilaginous, glabrous. Flowers 1- 3 (-4); perianth tube entire, exceeding the cataphyll by (2.5-) 4-10 cm, (2.5-) 3-5 mm wide, yellowish-white to white; limb infundibular with segments sometimes slightly recurved, these (3.8-) 4.5-6.5 (-7.5) cm long, generally of rather unequal length within each flower (differing by 2-15 mm), 0.6-1.6 (-2) cm wide, narrowly oblong (to narrowly elliptic-oblong or oblanceolate-oblong), often slightly longitudinally pleated and apically twisted, dorsally with a distinct median ridge, (subacute to) subobtuse to obtuse or rarely retuse, moderately to strongly tesselated in lilac-purple to violet-purple (shades of HCC 35 verging on 34, "Amethyst Violet/Bishops Violet") on pale ground, paler outside at least basally and on keels, with a median white streak on the upper side along most or the whole length of the segment, indistinctly (7-) 11-27-veined; filament channels glabrous to puberulous at least on margins. Stamens ca. 1/3 to at the most 1/2 of perianth limb in length, outer 1.5- 2.3 (-2.6) cm, inner 2-2.8 (-3) cm; filaments yellowish-white, slightly thicker base with pale to mid yellow margins; anthers versatile, 9- 15 mm, yellow to buff yellow; pollen yellow, grains 53- 75 × 40-55 µm, broadly bean-shaped to almost ellipsoid, 2-foraminate. Styles slightly to much overtopping stamens, yellowish-white, apex straight or slightly hooked, rarely distinctly recw-ved, stigmas decurrent for 3-4 (-5.5) mm. Capsules ± elevated above ground on projecting stem, 2-5 × 0.8-2.5 cm, oblong-ellipsoid to ellipsoid, short-pointed (broad-acuminate); seeds numerous, oblong-globose to globose, 2.5-3.5 mm in diam., reddish-brown, raphe surrounded by a pale somewhat swollen zone.