Primulina titan Z.B.Xin, W.C.Chou & F.Wen
Primulina Hance Herbs perennial, acaulescent, lithophytic. Leaves 4-10, basal, opposite; petiole 5-15 × 1.2-2.5 cm, glabrous; leaf blades broadly ovate, 15-35 × 12-30 cm, apex obtuse, base cuneate or cordate, margin repand, adaxial and abaxial surfaces glabrous; lateral veins 3-4, inconspicuous adaxially;...