Question: In which continent can you find both Witch-hazel and Cocculus?

full_context: Document 1: North American azaleas: North American azaleas are flowering shrubs in the genus "Rhododendron", section "Pentanthera", subsection Pentanthera, so named because they all have five stamens. Most are in the United States, with one species found in Canada and one being found in Mexico. North American azaleas are commonly confused with azaleas of Asian origin, the evergreen azaleas. North American azaleas are deciduous and produce two types of buds. One is a larger and produces about 20 flowers while the other bud produces a leafy shoot. The flower color, fragrance, and number of stamens vary among species.
Document 2: Hydrangea: Hydrangea ( ; common names hydrangea or hortensia) is a genus of 70–75 species of flowering plants native to southern and eastern Asia (China, Japan, Korea, the Himalayas, and Indonesia) and the Americas. By far the greatest species diversity is in eastern Asia, notably China, Japan, and Korea. Most are shrubs 1 to 3 meters tall, but some are small trees, and others lianas reaching up to 30 m by climbing up trees. They can be either deciduous or evergreen, though the widely cultivated temperate species are all deciduous.
Document 3: Cocculus: Cocculus is a genus of 11 species of woody vines and shrubs, native to warm temperate to tropical regions of North America, Asia and Africa. The common name Moonseed is also used for the closely related genus "Menispermum". The related Indian Berry ("Anamirta cocculus") is known as "Cocculus Indicus" in pharmacology.
Document 4: Witch-hazel: Witch-hazels ("Hamamelis," ) are a genus of flowering plants in the family Hamamelidaceae, with four species in North America ("H. mexicana", "H. ovalis", "H. virginiana", and "H. vernalis"), and one each in Japan ("H. japonica") and China ("H. mollis"). The North American species are occasionally called winterbloom.
Document 5: Merremia peltata: Merremia peltata is a species of flowering vine in the morning glory family, Convolvulaceae, that is native to Pemba Island, the Mascarene Islands, Madagascar, the Seychelles, Indonesia, Malaysia, the Philippines, northern Queensland and French Polynesia. It has been introduced and subsequently become invasive on some of the other Pacific islands.
Document 6: Loropetalum: Loropetalum is a genus of three species of shrubs or small trees in the witch-hazel family, Hamamelidaceae, native to China, Japan, and south-eastern Asia.
Document 7: Ipomoea cairica: Ipomoea cairica is a species of morning glory which has many common names, including mile-a-minute vine, Messina creeper, Cairo morning glory, coast morning glory and railroad creeper. This vining perennial has palmate leaves and large, showy white to lavender flowers. Each fruit matures at about 1 cm across and contains hairy seeds.
Document 8: Fothergilla gardenii: Fothergilla gardenii, also known by the common names Witch Alder, dwarf fothergilla, American wych hazel, and dwarf witchalder is a deciduous shrub in the Hamamelidaceae family. It is one of two species in the genus "Fothergilla."
Document 9: Mucuna: Mucuna is a genus of around 100 accepted species of climbing lianas (vines) and shrubs of the family Fabaceae and typically found in tropical woodlands.
Document 10: Colocasia: Colocasia is a genus of flowering plants in the family Araceae, native to southeastern Asia and the Indian subcontinent. Some species are widely cultivated and naturalized in other tropical and subtropical regions. Common names include tarul, karkala ko ganu, elephant-ear, taro, cocoyam, dasheen, chembu, champadhumpa, shavige gadde, and eddoe. Elephant-ear and cocoyam are also used for some other large-leaved genera in the Araceae, notably "Xanthosoma" and "Caladium". The generic name is derived from the ancient Greek word "kolokasion", which in the Greek botanist Dioscorides (1st century AD) meant the edible roots of both "Colocasia esculenta" and "Nelumbo nucifera". It is thought that the edible roots of "Colocasia esculenta" have been cultivated in Asia for more than ten thousand years. The species "Colocasia esculenta" is an invasive species in wetlands along the American Gulf coast, where it threatens to displace native wetland plants.
Document 11: Corylopsis: Corylopsis is a genus of nearly 30 species of shrubs in the witch hazel family, Hamamelidaceae, native to eastern Asia with the majority of species endemic in China but with some also in Japan, Korea, and the Himalayas. This genus is also known from the extinct species "Corylopsis reedae" described from Eocene leaf fossils found in Washington State, USA.
Document 12: Caulophyllum: Caulophyllum is a small genus of perennial herbs in the family Berberidaceae. It is native to eastern Asia and eastern North America. These plants are distinctive spring wildflowers, which grow in moist, rich woodland, it is known for its large triple-compound leaf, and large blue, berry-like fruits. Unlike many spring wildflowers, it is not an ephemeral plant and persists throughout much of the summer. Common names for plants in this genus include Blue Cohosh, Squaw Root, and Papoose Root. As hinted at by its common names, this plant is well known as an alternative medicine for inducing childbirth and menstrual flow; it is also considered a poisonous plant.
Document 13: Fothergilla: Fothergilla (witch alder) is a genus of two or three species of flowering plants in the family Hamamelidaceae, native to woodland and swamps of the southeastern United States.
Document 14: Cardiospermum: Cardiospermum is a genus of approximately 14 species in the soapberry family, Sapindaceae, which are native to the American, Indian, and African tropics. The genus name is derived from the Greek words καρδία, meaning "heart," and σπέρμα, meaning "seed." Common names of the members of this genus include Balloon Vine, Love in a Puff, Heartseed, and Heartseed Vine. These plants are classified as invasive species in parts of the Southern United States and South Africa.
Document 15: Wisteria: Wisteria (also spelled Wistaria or Wysteria) is a genus of flowering plants in the legume family, Fabaceae (Leguminosae), that includes ten species of woody climbing vines native to the Eastern United States and to China, Korea, and Japan. Some species are popular ornamental plants. An aquatic flowering plant with the common name wisteria or 'water wisteria' is in fact "Hygrophila difformis", in the family Acanthaceae.
ground_truth: North America