Features;"P. surculosa";"P. taliensis";"P. comata" Stolon;present;absent;absent Leaves Indumentum;"short appressed pubescent";"short appressed pubescent";"long fulvous hairs" "Inner blade shape";"ovate to suborbicular";"ovate-rounded to reniform";elliptic "Petiole of inner leaves at fruiting";"2–3 times as long as blade";"1–2 times as long as blade";"slightly longer than blade" "Calyx lobe apex";"3-teethed, occasionally entire in fruiting";"subacuminate to acute, occasionally denticulate";"obtuse to rounded" "Corolla lobe apex";3-teethed;3-teethed;entire "Throat of the corolla tube";pilose;glabrous;pilose