Yam (vegetable) Yam (vegetable) Yam is the common name for some plant species in the genus "Dioscorea" (family Dioscoreaceae) that form edible tubers. Yams are perennial herbaceous vines cultivated for the consumption of their starchy tubers in many temperate and tropical world regions. The tubers themselves are also called "yams", having numerous cultivars and related species. In parts of the United States and Canada, "yam" is sometimes used to refer to varieties of the unrelated sweet potato ("Ipomoea batatas"). The name, yam, appears to derive from Portuguese "inhame" or Canarian (Spain) "ñame", which derived from West African languages during trade. The main
Lightwing Rooster the aircraft's semi-aerobatic abilities. He later turned to the development of his Type 6 monoplane and the Rooster's registration was cancelled in 1990. Lightwing Rooster The Lightwing Type 4 Rooster is an experimental biplane glider, capable of powered or unpowered flight, built in the UK in the 1980s to explore the properties of this unusual glider configuration. The Rooster was not intended for production but to explore the soaring performance of a biplane. It is an unequal span biplane, not technically a sesquiplane but with a lower wing with 2/3 the span of the upper one. The aspect ratio of