Plants usuall 6 - 11 dm. Tall, erect or nearly so, inconspicuously pubescent or perhaps glabrate. Leaf-blades very narrowly lance-linear, often falcate, mostly 1.0 - 2.5 cm. Broad and 15 - 30 cm. long; petioles relatively short but usually manifest. Flowers unpeduncle, bracted, simple or branched clusters from the upper lear-axils. Corallas bluish purple, mostly 4 - 6 cm long; throat longer than the cylindrical part of the tube.