Rosette leaves linear, ca. 2.5 × 0.4 cm; appendage white, suborbicular, cartilaginous, apical spine sometimes 1-toothed on each side. Stem leaves linear, to 2.5 × 0.4 cm, apex spinose. Flowering stem branched, erect, 10-30 cm. Inflorescence paniculate, narrowly pyramidal in outline, to 7 cm in diam., small inflorescences corymbiform; bracts attached to middle part of pedicel. Flowers long pedicellate. Sepals ovate, ca. 1 mm, apex acute. Petals white, adaxially red spotted, lanceolate, 3-4 × ca. 1 mm, apex obtuse. Stamens slightly shorter than petals; anthers dark purple. Nectar scales subquadrangular, apex rounded to emarginate. Carpels erect, lanceolate-oblong, base shortly stipitate. Styles ca. 1 mm. Follicles erect, apical beak ca. 1 mm. Seeds brown. Fl. Sep, fr. Oct.