• Authority

    Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

  • Family


  • Scientific Name


  • Description

    Genus Description - Fls perfect; sep 4–5, distinct, erect, firm-chartaceous; stamens connate below to form a short tube with (4)5 alternating filaments and as many alternating sterile lobes; anthers tetrasporangiate and bilocular; style solitary, with a capitate stigma; ovule one; utricle membranous, indehiscent; herbs with opposite, petiolate, entire lvs and greenish fls in elongate, terminal and axillary spikes. 100, Old World.