Northeastern Asian Flora
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Sparganium emersum Rehmann  
Family: Typhaceae
[Sparganium acaule (Beeby ex Macoun) Rydb., moreSparganium chlorocarpum Rydb., Sparganium chlorocarpum f. acaule (Beeby ex Macoun) E.G.Voss, Sparganium chlorocarpum var. acaule (Beeby ex Macoun) Fernald, Sparganium diversifolium Graebn., Sparganium diversifolium var. acaule (Beeby ex Macoun) Fernald & Eames, Sparganium diversifolium var. wirtgeniorum Graebn., Sparganium emersum f. angustifolium (Morong) So?, Sparganium emersum f. gracile (Meinsh.) So?, Sparganium emersum f. simile (Meinsh.) So?, Sparganium emersum f. submersum (Gl?k) So?, Sparganium emersum f. subvaginatum (Meinsh.) So?, Sparganium emersum subsp. acaule (Beeby ex Macoun) C.D.K.Cook & M.S.Nicholls, Sparganium emersum subsp. simplex (Huds.) So?, Sparganium emersum var. acaule (Beeby) A.Haines, Sparganium emersum var. beckmannii A.V.Grebenjuk & Chepinoga, Sparganium emersum var. multipedunculatum (Morong) Reveal, Sparganium emersum var. simile (Meinsh.) Graebn., Sparganium gracile Meinsh., Sparganium longissimum (Franch.) Fritsch, Sparganium multipedunculatum (Morong) Rydb., Sparganium simile Meinsh., Sparganium simplex Huds., Sparganium simplex subsp. emersum (Rehmann) K.Richt., Sparganium simplex var. acaule Beeby, Sparganium simplex var. emersum (Rehmann) Nyman, Sparganium simplex var. fluitans Godr. & Gren., Sparganium simplex var. gracile (Meinsh.) Graebn., Sparganium simplex var. inundatum Graebn., Sparganium simplex var. longissimum (Fr.) Graebn., Sparganium simplex var. multipedunculatum Morong, Sparganium simplex var. natans Gl?k, Sparganium simplex var. submersum Gl?k, Sparganium simplex var. subvaginatum (Meinsh.) Graebn., Sparganium subvaginatum Meinsh., Sparganium wirtgeniorum (Graebn.) Rouy]
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  • Japan Flora
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Japan Flora: Stems usually erect, 20-60 cm. long; leaves elongate, 3-12 mm. wide, erect, keeled beneath; spikes with 2-5(-6) pistillate, and 3-8 staminate heads, the lowest head pedunclate; fruit 4-5 mm. long, 2-2.5 nim. in diameter, gradually narrowed to a beak; stigma linear, 1.5- 2 mm. long.

Reported from Hokkaido. Eurasia and N. America.

Sparganium emersum
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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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