Fagus grandifolia this is not considered distinct in the Flora of North America. The Mexican beech ("Fagus mexicana"), native to the mountains of central Mexico, is closely related, and is sometimes treated as a subspecies of American beech, but more often as a distinct species. The only "Fagus" species found in the Western Hemisphere (assuming "F. mexicana" is treated as a subspecies), "F. grandifolia" is believed to have spanned the width of the North American continent all the way to the Pacific coast before the last ice age. It is a deciduous tree growing to tall, with smooth, silver-gray bark. The leaves
Dioscorea sylvatica Dioscorea sylvatica Dioscorea sylvatica ("forest elephants foot") is a species of a twining tuberous vine that is native to Africa. It is common and widespread in forest and thicket, throughout the summer rainfall areas of East and Southern Africa. It produces a distinctively flattened caudex, often with lobes that spread out. The creeping shoots grow throughout most of the year, though each will periodically die back and be replaced from the central caudex root stock. In dryer conditions it can become deciduous. The green creeping foliage can reach 4 meters or more in height. It is an extremely widespread and