Phytologia 17:467-472* Robinson, H. 1969, A Monograph of Foliar Anatomy of the Genera "Connellia", "Cottendorfia" and "Navia" (Bromeliaceae).
* Robinson, H. 1969, A Monograph of Foliar Anatomy of the Genera "Connellia", "Cottendorfia" and "Navia" (Bromeliaceae).