1828, William Jackson Hooker, Pitcairnia Bracteata: Bracteated Pitcairnia, Samuel Curtis (editor), Curtis's Botanical Magazine: Or, Flower Garden Displayed, Volume 55 [Volume 2 of the New Series], page 207, Leaves a foot or more long on the lower part of the cylindrical and furfuraceous stem, linear-lanceolate, coriaceous, obscurely striated, very acuminated, the margin entire, except at the sheathing base, where there are some strong brown teeth pointing upwards: […] .
Source: wiktionary