TABLE 1 in The checklist of Raphiocarpus species (Gesneriaceae, Didymocarpinae) in the flora of Vietnam with the description of a new species, R. bicallosus

TABLE 1. The comparison of discriminative morphological characters between Raphiocarpus bicallosus and R. tamdaoensis
CharactersR. bicallosusR. tamdaoensisProphyllsPresent, 5–8 mm long and 4–6 mm wideAbsentInflorescence3–5-flowered1-floweredCorolla color schemeTube yellow-orange, limb lobes dark purple-brownTube and limb uniformly pale yellowTube ventral ornamentationTube inside (at the base of abaxial lobe) with 2 prominent elongate hairy bossesTube inside glabrous without ornamentationStaminodePresentAbsentOvaryGlabrousDensely velutinousCapsule5–6 cm long, glabrous3–4 cm long, pubescent