Herba annua vel biennis (vel perennis?) statu pyramidali, parce ramosa, ramis teretibus tomentosulis; stipulae minimae subulatae, tomentosae, caducissimae; folia ovata vel ovato-lanceolata, basi profunde cordata, satis parva, scabra, tomentosa, margine irregulariter grosse serrata vel indistincte dentata, nervis subtus valde prominentibus supra immersis; lamina secus nervum medianum saepius inflexa; petioli longi, laminam dimidias fere partes longitudine adaequantes; flores mediocres in axillis foliorum supremorum singuli, longe pedunculati; pedunculus petiola longitudine multiplo superans, infra calycem articulatus; calyx infundibuliformis profunde partitus, utrinque tomentosus, lobis longioribus oblongo-ovatis, longe acuminatis, indistinctissime nervosis, utrinque tomentosis; corolla infundibuliformis, glaberrima, satis magna lutea; petala obovata, basin versus subcuneata, obtusa, nervis parce subdichotomis; tubus stamineus brevis basi efilamentosa cylindraceus glaberrimus antheris globatis densissimis; ovarium sessile discoideum pilis stellatis vestitum; styli ± 19, glaberrimi albidi, basi non multum connati; stigma capituliforme, glabrum, rubiginosum; fructus discoideus calyce amplexus pilis stellatis magnis subtomentosus; carpidia a tergo curvata apice obtusa dente interno magno compta; semina subreniformia, fusca, ad hilum brunnea, glaberrima, subtilissime verruculosa.
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