This species is up to 40-80 cm high. Leaves lanceolate, up to 40 cm long, glaucous-green in colour. Flowers 2.5-3 cm in diameter, light yellow in colour, in long dense spikes. Origin: Argentina and Chile. Easy and perfectly hardy. 14 cm pot  

Leaves solitary, or rarely in pairs, up to 50 cm long, channelled, transversely striped, looking like tusks emerging from the soil. Flowers in dense inflorescences at soil level. Eastern Africa. Not hardy. Young plants. Bare root  16 cm pot   

Stems erect, strong and clumping, square or pentagonal in section, strongly tubercled. Flowers 2-2.5 cm in diameter, bell-shaped, dark red in color, finely papillose. Single or slightly branched cutting  Single or slightly branched rooted cutting 

Stems blackish-brown, about 6 mm in diameter, with fine teeth, creeping, very dense. Flowers small, campanulate, pale brown spotted with red-brown. Rare and ornamental. Madagascar. Branched cutting  Branched rooted cutting  

~~ Stems succulent, up to 25 cm high. Leaves fleshy, peltate, roundish-ovate, acuminate at apex, 9 cm in diameter. Colombia and Peru. Very beautiful and elegant. Not hardy. Keep in a shaded place. Abundant waterings in summer. 12 cm pot

This species forms clumpings that are up to 20 cm in diameter. Leaves distichous up to 30 cm long, rough, glaucous green. Flowers pink-reddish. Cape Province. Very easy. Bare root  10 cm pot