Herbs 20-75[-200+] cm, usually rhizomatous and/or roots notably fleshy or thickened. Leaves (excluding clasping, scalelike structures proximal to leaves proper) mostly 5-12 per shoot. Inflorescences: flowers nodding [erect], sometimes surpassed by foliage or individual flower overtopped by ± leaflike bract. Flowers often fragrant, showy; sepals usually persistent, usually green or purplish; petals dark red to purplish, almost black, or maroon to bronze [pink, red, white, yellow], usually with contrasting margins. Follicles usually ± leathery. Seeds relatively large. x = 5.
'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
