This species is typical of section Carolinella species which are distinguished by the calyptrate capsule and has been compared with P. intanoensis, another Carolinella, but found in Thailand. P. calyptrata has flower stems, purple flowers and purple under the leaves whereas P. intanoensis is stemless and has white flowers. P. calyptrata is efarinose, but leaves are densely covered in articulated hairs and the scape is villous. Leaves are arranged alternately (this is unusual) and are suborbicular, about 3cm, with a rounded apex and cordate base, color is purple below. Scape purple at flowering, 12-18cm with 1-2 whorls and 2-5 purple flowers with a yellow eye and hairy annulus per whorl. If you have an image of this species, please contact the webmaster. 如果你有这个物种的图像,请与网站管理员联系。