"hesperaloe funifera" grows on rocky slopes and open plains in the tamaulipan mezquital and the eastern edges of the chihuahuan desert. it is a rosette-forming perennial. it has long, narrow, yellow-green blades up to 200 cm long but only 5 cm across. flowering stalk can be up to 250 cm tall, with long branches. flowers are green or white, often tinged with purple, about 25 mm across.