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Name derivation:

Common name ‘arrow arum’



Peltandra Raf.

Order Alismatales;  Family Araceae



Leaves up to 40 cm high, blades up to 25 cm long.

Flowers imperfect.  Spadix covered with flowers;  male flowers above are sessile with 4-8 anthers;  female flowers below have a unlocular ovary.

Fruit green or red and fleshy, covered by persistent base of spathe (Cook et al.  1974).

Rhizomes (modified stems) in the sediments are food-storing organs that provide survival during droughts and freezing, so that above-ground stems and leaves often die back at the onset of growth-limiting seasons and develop again when rain and/or temperature increases (Sculthorpe 1967).  Roots of Peltandra can survive in anoxic sediments through anaerobic respiration, producing ethanol at rates inversely related to dissolved oxygen depletion to concentrations less than 3% (saturation?).

Similar genera:

Superficially leaves of Pontederia are similar in their shape (but not pattern of veination).


Freshwater shallow habitats (marshes, lakeshores).



Cook, C.D.K.  1974.  Water plants of the World.  Dr. W. Junk b.v., Publishers, The Hague (561 pp).

Sculthorpe, C.D.  1967.  The Biology of Aquatic Vascular Plants.  Edward Arnold, Publishers Ltd., London.