Plantsnap – Identify Plants, Trees, Mushrooms With An App

Purpleplume flatsedge (Cyperus sanguinolentus)

Description

Tufted annual or perennial. Culms trigonous, smooth, 5-80 cm high, to 2 mm diam. Leaves not septate-nodulose, equalling or shorter than culms, 1-3 mm wide. Inflorescence simple with 3-5 branches to 5 cm long, or head-like; clusters subdigitate or spicate, hemispherical, to 25 mm diam.; involucral bracts leaf-like, 1-3 exceeding inflorescence. Spikelets flattened, 2-25 per cluster, 5-20 mm long, 2-3 mm wide in side view, 6-36-flowered; rachilla not winged, persistent. Glumes obtuse, with midrib 1-3-nerved, 1.5-2.5 mm long, 1.5-2 mm wide in side view, dark red-brown to blackish, with pale margins and often with a hyaline patch on sides. Stamens 2 or 3. Style 2-fid. Nut biconvex, broad-obovate to circular, a third to half as long as glume, 0.8-1.5 mm long, 0.6-1.2 mm wide, brown to blackish.

Taxonomic tree

  • Domain: Eukarya

    • Kingdom: Plantae

      • Phylum: Magnoliophyta

        • Class: Liliopsida

          • Order: Poales

            • Family: Cyperaceae

              • Genus: Cyperus