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Trapaceae |
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Trapaceae
(formerly Hydrocaryaceae), a family of aquatic dicotyledonous plants that contains a single genus—Trapa (water chestnuts). The solitary flowers develop in the axils of floating leaves and are on short pedicels that rise above the water. There are four petals, four sepals, and four stamens. The one-seeded fruit usually has two or four hornlike processes. The seed has two cotyledons: one is large and fleshy, and the other small and scalelike. Water chestnuts grow in wind-protected freshwaters—oxbow lakes, river and lake backwaters, and small lakes. Fossils are known from the Late Cretaceous, and fruits are often found in Tertiary deposits. REFERENCESVasil’ev, V. N. “Semeistvo Trapaceae Dumortieu.” In Osnovy paleontologii. [vol. 15.] Moscow, 1963.Takhtadzhian, A. L. Sistema i filogeniia tsvetkovykh rastenii. Moscow-Leningrad, 1966. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Editors Arthur, Schmid and Trapa (American Mathematical Association) have aimed this research at graduate students and mathematicians in the field, and include articles about considerations of the trace formula, transfer factors associated with real reductive groups, weighted orbital integral objects and unitarizability of real and p-adic groups. The year started with director Jose Padilha's Trapa de Elite (The Elite Squad) taking home the top prize at the Berlin International Film Festival, and ended with the international success of director Cao Hamburger's The Year My Parents Went an Vacation. Le Roux, Chocaid, Chocar, Choco-gal, Chocofrance-Hosta, Chocolates Eureka, Chocolates Trapa, Chocolats Frey, Chupa Chups, Ciao, Cida, Cirio, Cisti Bu-gan Barra, Citterio, Clara Candy, Claudel Roustang, Claudia Cup Cake, CNP, Cobral, Cocachoc, Codan, Cogesal, Colgate Palmolive, Colmi, Colussi, Comerfords, Concord, Confisell Belgium, Confiserie du Tech, Confood, Continental Bakeries, Continental Sweets, Coolmore Foods, Coop Schweiz, Cooper. |
Trapa |
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