Perennials or biennials up to 1,3 m high when flowering, usually with a single rosette with erect leaves spirally arranged, old leaves remaining attached to stem. Leaves narrowly triangular to lanceolate, (80-)150-300(-400) x 30-60(-100) mm, sharply acute, often drying up from apices, dorsiventrally flattened and more or less caÂnaliculate, glabrous but often with irreguÂlarly spaced teeth or cilia with a broad base, green to yellowish green. Inflorescence a flat-topped thyrse with numerous pedicel-late flowers in many dichasia each producÂing new buds for a long time, with indistinct peduncle covered with leaf-like bracts gradÂually decreasing towards apex. Calyx: lobes broadly triangular, 1-1,5 mm long, acute and often tapering into a terminal hair, glaÂbrous except for occasional marginal teeth, scarcely fleshy and with more or less memÂbranous margin, yellowish green. Corolla tubular to cup-shaped, fused basally for 0,5-0,8 mm, pale yellow; lobes oblong-obo-vate, 3—4 mm long, rounded to somewhat hooded, recurved. Stamens with yellow anthers. Squamae oblong-cuneate, 0,6-0,9 x 0,3-0,5 mm, more or less emarginate, s
