Englerina swynnertonii (Sprague) Polhill & Wiens

Corolla 1.8–2.4 cm long, orange to flame-red; buds slightly 4-angular, a little swollen near base, bossed at vents, and with a slight apical swelling 4–5 mm long; tube 9–10 mm long, with V-slit extending halfway, densely covered inside (especially on adnate filament ridges) with lobulate papillae (like bunches of grapes) especially over lower two-thirds (except extreme base); lobes erect, linear-spathulate.