Fl. forming a double triangle, facing upwards; perianth segments roundish, very broad, truncate, slightly mucronate, reflexed, with midrib showing, overlapping more than half; the inner segments narrower, more nearly ovate, shouldered at base, blunt at apex, scarcely mucronate; corona funnel-shaped, smooth, yellow, mouth straight and lightly frilled, with rim flanged and minutely crenate. Mid-season