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
Varieties of Modern Greek described below form a contiguous Greek-speaking area, which covers most of the territory of Greece. They represent the vast majority of Greek speakers today. As they are less divergent from each other and from the standard, they are typically classified as mere "idioms" rather than "dialects" by Greek authors, in the native Greek terminology. The most prominent contrasts between the present-day dialects are found between northern and southern varieties. Northern varieties cover most of continental Greece down to the Gulf of Corinth, while the southern varieties are spoken in the Peloponnese peninsula and the larger part of the Aegean and