Porteresia coarctata

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Photographs by: Dr. Maulik Gadani

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  • Botanical Name : Porteresia coarctata (Roxb.) Tateoka
  • Synonyms : Oryza coarctata Roxb.
  • Common Name : Wild Rice
  • Plant Family : Poaceae (Gramineae)
  • Plant Form : Grasses
  • Occurrence (Special Areas) : Indroda Park

About Porteresia coarctata Plant :

  • Habit : A perennial grass with culms decumbent and rooting from lower nodes.
  • Leaves :
    • Ligulate, ligule an eciliate membrane, coriaceous.
    • Leaf-blade surface ribbed, margins cartilaginous, spinulose, apex attenuate.
  • Inflorescence and Flowers :
    • Inflorescence a panicle, contracted, lanceolate.
    • Spikelets solitary.
    • Fertile spikeletspedicelled.
    • Pedicels tip discoid.
    • Fertile spikelets comprising 2 basal sterile florets; 1 fertile florets; without rachilla extension.
    • Spikelets elliptic; laterally compressed; falling entire.
    • Spikelet callus attached transversely.
    • Glumes are both absent or obscure.
    • Basal sterile florets similar, barren, without significant palea.
    • Lemma of lower sterile floret subulate.
    • Lemma of upper sterile floret subulate.
    • Fertile lemma oblong, coriaceous, keeled.
    • Lemma apex rostrate, awned.
    • Principal lemma awn pungent.
    • Palea elliptic, coriaceous.
    • Palea apex acuminate.
    • Lodicules 2.
    • Anthers 6.
  • Fruit :
    • Caryopsis with adherent pericarp; oblong, isodiametric, biconvex.
    • Hilum linear.
  • Significance :
    • A relative of Oryza (rice) found in mangrove areas in the intertidal zones in coastal areas.
    • It is saline tolerant and can tolerate water logging also.