P. pauliana is distinguished by yellow flowers arranged in a racemose inflorescence which resembles members of Section Malvacea. A more recently described P. pauliana var huiliensis has rose-purple flowers and is found in Huili County, Sichuan (Deping, Malong). The capsule exceeds the calyx and is curved at the apex which is unusual. This species is quite distinct and may require its own Section. If you have an image of this species, please contact the webmaster.