Sagittaria


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Related to Sagittaria: Sagittaria latifolia
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broad leaved arrowhead

broad leaved arrowhead

Water plant. Arrowhead-shaped leaves. White rounded flowers with 3 petals. Roots can be eaten like potatoes, used for indigestion. Leaf tea used for rheumatism.

Sagittaria

 

(arrowhead), a genus of perennial monoecious and dioecious aquatic or marsh herbs of the family Alismaceae. The leaves are in a basal rosette. In aquatic species the leaves are mainly of three types: those that are submerged are ribbon-like, those that are floating are ovate to linear-lanceolate, and those that emerge above the water’s surface are sagittate and long-petioled. The white, usually unisexual flowers have a double perianth and are gathered into whorls of three, forming a racemose inflorescence. The fruit is a cluster of greatly compressed carpels.

There are about 20 species of arrowhead. Three or four species occur in the Old World; the rest are distributed in temperate and tropical America. The USSR has four species, one of which is not native. The Old World arrowhead (S. sagittifolia) grows near shores and in bodies of water with stagnant or sluggish currents; it often forms a dense cover over extensive areas. The species S. trifolia is found in southern regions. In late summer both species develop horizontal shoots with tuberous formations, which are edible and rich in starch. In Japan and China a form of 5. trifolia is cultivated for its tubers.

Arrowhead species serve as food for swimming birds. Several species, including S. sagittifolia and S. latifolia, are cultivated as ornamentals.

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Las variables de mayor peso en el primer componente fueron las especies Bacopa monnieri, Echinochloa colona, Hydrocotyle verticillata y Sagittaria lancifolia (asociadas positivamente) y Ludwigia octovalvis, Hymenachne amplexicaulis y Paspalum sp.
Hydrocotyle bonarienseis y Sagittaria montevidensis, con un abundante cesped ribereno integrado por Acmella decumbens, Canna coccinea, Canna indica y gramineas de los generos Stipa y Paspalum.
Los resultados indican que las hojas de Sagittaria macrophylla se ven afectadas por el nivel de agua en el cual crecen, de tal forma que las variaciones de este factor determinan la heterofilia de la especie.
The cellular localization of dercitamide in the Palauan sponge Oceanapia sagittaria.
EEB 19970056 AF203679 Alismataceae Sagittaria graminea Michx.
25) Ed e cio che si traduce nella metafora sagittaria (comune a Machiavelli e Leoniceno) di un metodo tendenziale che deve puntare piu in alto possibile proprio perche sa di non potere arrivare al massimo possibile; e ancora, e cio che nel Principe determina formulazioni beUissime e paradossali come "Di che si cava una regola generale, la quale mai o raro falla" (126).
ANOTHER place to visit from Caorle is the fascinating Roman and early Christian archaeological site beneath the cathedral at Concordia Sagittaria.
The muskrats have broadened their diet to include spike-rushes, Sagittaria, water plantain, and assorted sedges, but they continue felling cattails, and their slash-and-eat agriculture leaves small clearings everywhere in the tules.
Population genetics of two rare perennials in isolated wetlands: Sagittaria isoetiformis and S.
Swampy land, on the other hand, would be filled with plants which can grow in oxygen-starved soil because of special air-containing tissue: Equisetum (horsetail or scouring rush), rushes (Juncus), Scirpus, Alisma, Sagittaria and Sparganium.
Opportunities for selfing and inbreeding depression in Sagittaria congeners (Alismataceae) with contrasting sexual systems.