Monographs Details: Ronnbergia columbiana E.Morren
Authority: Smith, Lyman B. 1957. The Bromeliaceae of Colombia. Contr. U. S. Natl. Herb. 33: i-v, 1-311.
Description:Description - Leaves about 8 in a funnelform rosette, 4 cm. long, bearing brown impressed scales especially beneath, sheaths elliptic, narrow, blades linear, broadly acute and cuspidate, 25-48 mm. wide, glaucous-green above, brownish purple beneath, subdensely serrulate with spines about 1 mm. long; scape erect, stout, farinose especially toward apex; scape-bracts imbricate, lanceolate, acuminate, green, membranaceous; inflorescence lax, to 6 cm. long; rhachis tomentulose-lepidote; floral bracts ovate, acuminate, much shorter than the ovary or the lowest sometimes exceeding it, membranaceous, pale-lepidote; flowers divergent; sepals mucronate, to 18 mm. long, short-connate; petals 25-35 mm. long, blades at length spreading, acute, purple with white margins; ovary subcylindric, stout, to 10 mm. long.