Characters;"O. dulongensis";"O. monsvictoriae" Leaf;"principal veins flat on both sides of leaf blade; stipules subulate, 4–6 mm long";"principal veins raised on both sides of leaf blade; stipules broadly triangular, 2–4 mm long" Inflorescence;"inflorescence fasciculate, 3- or 4-flowered; peduncle glabrous; bracts linear, ca. 1 mm long, glabrous";"inflorescence axillary, 1-flowered; peduncle puberulous; bracts lanceolate to subulate, 1–2mm long, puberulous" Flower;"calyx puberulent to glabrescent, 3–4 mm long; lobes slightly longer than calyx tube; corolla funnelform, 11 mm long, glabrate outside";"calyx pilose,1–2 mm long, lobes and tube equal in length; corolla narrowly funnelform, 15 mm long, puberulous outside"