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.

REFERENCES

Vasil’ev, V. N. “Semeistvo Trapaceae Dumortieu.” In Osnovy paleontologii. [vol. 15.] Moscow, 1963.
Takhtadzhian, A. L. Sistema i filogeniia tsvetkovykh rastenii. Moscow-Leningrad, 1966.
References in periodicals archive ?
They are more similar to those species of Hemitrapa that Miki transferred from Trapa. It is possible that three different plant types contribute fruits to this complex: Trapa, with fruits of a modern form dating from the Miocene; Hemitrapa represented by such fossils as the Paleocene H.
Longhi et al., "Diurnal exchanges of C[O.sub.2] and C[H.sub.4] across the water-atmosphere interface in a water chestnut meadow (Trapa natans L.)," Aquatic Botany, vol.
La inefable sonrisa de la trapa. Cuando me acercaba a alguien para preguntar por una direccion, por un precio, yo note el contraste entre los rostros serios o adustos y mi expresion risuena.
Los cuentos "La orgia" y "La noche de la trapa" son publicarlos en el Semanario Sucesos, dirigido por el poeta Rogelio Echavarria.
Only in the last two years in Oswiecim district three oxbows were destroyed (dumped/buried), including one with habitat of water chestnut Trapa natans (endangered species in Poland).
This element is part of management program to control water chestnut (Trapa natans) from designated locations in southern Lake Champlain (approximately 300 acres) in 2014.
This element is part of a management program to control water chestnut (Trapa natans) from designated locations in Lake Champlain (approximately 100 miles of shoreline in Vermont and New York), including adjoining wetlands and tributaries, and in other waters bodies within Vermont in 2014.
(7) En el prologo de La noche de la trapa, German Espinosa admite que uno de sus relatos resulto de la lectura de El Aleph de Borges, aunque explica que "la influencia del argentino no es muy marcada, si se piensa que he cultivado siempre la narracion con final sorprendente, que [Borges] en cambio rechazaba" (Espinosa, 2007, p.
Trapa Chowdhury, a student of Dhaka College, who lives in Chawk Bazar, had suffered from diarrhoea for two days after having 'fuchhka' from a street vendor at Parade Maidan area.
Lastly, Romantic Trapa 200-page manuscript that I penned down while in high school.