Parasitic, twining herb. Stems medium to thick, yellowish. Inflorescences cymose clusters. Flowers 4-7 mm long; pedicels shorter than flowers. Calyx shorter than corolla tube; lobes triangular-ovate, apex spreading. Corolla cylindrical-campanulate; lobes triangular-lanceolate, erect to spreading or reflexed, as long as tube. Stamens shorter than corolla lobes; filaments as long as anthers. Scales oblong, reaching stamens, free at apex, fringes rather short. Ovary globose; styles as long as stigmas. Flowering time Apr.-June. Fruit a globose capsule, circumscissile near base. Seeds 1 mm long, subglobose.