Sparganium


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Sparganium

 

(bur reeds), a genus of perennial aquatic or marsh plants of the family Sparganiaceae. The flowers are unisexual and cluster in thick heads. The perianth is formed by three to six scaly leaflets. The fruit is dry and has a porous pericarp. There are about 20 species in the temperate and subarctic regions of the northern hemisphere, as well as in Australia and New Zealand. In the USSR there are about ten species, the most common of which are S. erectum and the simple bur reed (S. simplex). Bur reeds serve as food for waterfowl and aquatic fur-bearing animals like the coypu and the muskrat. Some species are valued in apiculture as beebread plants.

References in periodicals archive ?
California) y otras que se encuentran en zonas mas interiores del pais, como Elatine brachysperma, Nuphar advena, Potamogeton amplifolius, Sparganium americanum y Wolffiella gladiata.
tenuissimus 4 7 M H C E Saururus cernuus 4 9 M EH C D Spirodela polyrrhiza 5 7 M H C E Utricularia gibba 4 10 M EH C E Utricularia macrorhiza 5 9 M EH C D Wolffia brasiliensis 6 7 M H C D Wolffia columbiana 5 7 M H C E Zannichellia palustris 6 10 M EH D E Eleocharis palustris 8 10 H EH D E Sparganium emersum 8 10 H EH D D Vallisneria americana 7 7 H H E E Ceratophyllum echinatum 10 10 EH EH E E Myriophyllum verticillatum 10 10 EH EH E E Potamogeton amplifolius 10 10 EH EH Table 2.
Our sample area was dominated by Typha angustifolta, Leersia oryzoides, and Sparganium eurycarpum.
bur-reed, Sparganium hyperboreum, and mare's tail, Hippuris vulgaris).
Macrophyte growth is sparse in all lakes with the exception of small patches of Isoetes, Nuphar, and Sparganium.
Globular, condensed inflorescences also occur in Eriocaulaceae, Sparganium, and Rapateaceae.
The most common aquatic macrophytes were: Elodea canadensis L, Sparganium americanum Nutt, and Sagittarla latifolia Willd.
Vegetated pools were deep (mean = 57 cm, range 28-103), had virtually no current (mean = 0 cm/sec, max 1), with a substratum dominated by Sparganium americanum and silt.
en 22 y 32; Galium palustre y Sisymbrium chrysanthum 1 en 23 y + en 26; Sparganium erectum s.
Estrato herbaceo: Holcus lanatus + en 3 y 14; Alliaria petiolata 1 en 4, + en 5; Epilobium hirsutum + en 4 y 6; Rumex induratus y Galium mollugo + en 4 y 14; Polygonum persicaria y Circaea lutetiana + en 8 y 10; Solanum sublobatum + en 10 y 17; Mentha x piperita + en 11 y 16; Leersia oryzoides 1 en 13, + en 18; Epilobium obscurum 1 en 14, r en 17; Sparganium erectum subsp.