Mitrastemon Makino

Herbs, parasitic on roots. Vegetative parts partly thalloid. Flowering shoot at first enclosed by a cupular volva, short, erect, unbranched. Inflorescence bracts scale-like, decussate in 4 ranks, concave, apicalmost largest and partly enclosing flower. Flowers bisexual, pale. Perianth cupular, truncate, persistent. Stamens very numerous, completely connate into a closed tube; connectives forming a depressed-conic cover over stigma, with a minute terminal opening, tube longitudinally dehiscent and entire structure caducous after flowering; anthers in a dense subterminal band, locules minute, connivent, extrorse, dehiscent by apical pores, initially covered by a thin irregularly ruptured membrane. Ovary superior; placentas 8-10(-15); integument 1. Style short and thick; stigma flat-to depressed-conic, obscurely 2-lobed.