Schoenoplectus lacustris (L.) Palla / Homotypic Synonyms: Scirpus lacustris L., it is a perennial plant, up to 50-150 cm. Rhizome horizontal, 7-8 mm diam. Stem 3-10 mm diam., terete, soft. Sheaths up to 40 cm, soft. blades normally reduced to mucro on tip of oblique mouth margin of sheaths, sometimes, esp. when submerged, up to 30 mm, or longer, channelled, pointed. Inflorescence 50-90 mm, pseudo lateral multiple spike or small anthelodium; lowest bract 33-55 mm, erect, thick, almost terete, adaxial surface present as narrow strip, apex acute, primary branches 8, up to 60 mm, scabrous, each supported by glume-like bract, up to 15 mm, truncate, margins scarious, often fringed perianth bristles 5-7, equalling nut or slightly longer, reddish brown. Stamens (2-)3, anthers 1.5-2.7 mm, with reddish brown, barbed connective tip, stigmas 2 or 3. Nut 1.6-2.7 x 1.1-1.8 mm, obovoid, bi-convex or triangular, plano-convex, apiculate, finely reticulate.
Flowering in: Mar- Jul.
Leave a Reply