Northeastern Asian Flora
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Spirodela oligorrhiza (Kurz.) Hegelm  
Family: Araceae
[Lemna melanorrhiza Muell. & Kurz, moreLemna oligorrhiza Kurz.]
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  • Japan Flora
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Japan Flora: Fronds membranous, narrowly obovate to oblong, palmately 3- to 5- nerved, 4-6 mm. long, 1.5-2.5 mm. wide, purplish beneath; roots 3-5; winter buds absent; plants growing throughout the year in the summer condition.

Shikoku, Kyushu (according to S. Miki). Formosa, China, Malaysia, and Australia.

Spirodela oligorrhiza
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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