LakeStewardship


Trapaceae
Water-chestnut Family

These images are presented here for your reference and enjoyment by Michael R. Martin (copyright © Michael R. Martin 2002-2015 All Rights Reserved). If you wish to arrange to use these electronic images or high-resolution digital versions, you must complete and submit an Application for Image Use Request Form.


Trapa natans - Water Chestnut

Invasive. Dissected submerged leaves with triangular/diamond shaped floating leaves. Bladders in leaf stem provides flotation. Hard, spiky seed. Long roots anchors plants. Plants often produce "daughter" clones.

Line drawing of Trapa natans
Line drawing
Trapa natans seed
Habit, showing floating plant w/daughter clone and long roots • Mohegan Lake July 2007
Trapa natans seed
Close-up showing diamond-shaped leaves and leaf stem bladder (flotation) • Mohegan Lake July 2007
Trapa natans seed
Nearly mature seed pods • Mohegan Lake July 2007
Trapa natans seed
Detail - leaf and flotation bladder on stem • Mohegan Lake July 2007
Trapa natans seed
Detail - center of plan showing flowering stalks and forming seeds underneath leaves • Mohegan Lake July 2007
Trapa natans seed
desiccated seed pod
Trapa natans seed
desiccated seed pod
Trapa natans seed
desiccated seed pod

If you wish to arrange to use these electronic images, high-resolution scans or the originals (35 mm slides), please contact Michael R. Martin.

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copyright © Michael R. Martin 2003-2015
Last updated: Friday, January 22, 2016 3:53 PM