Question: Which genus has more species, Datura or Castanopsis?

full_context: Document 1: Kalopanax: Kalopanax septemlobus, common names castor aralia and tree aralia, is a deciduous tree in the family Araliaceae, the sole species in the genus "Kalopanax". It is native to northeastern Asia, from Sakhalin and Japan west to southwestern China. It is called "cìqiū" (刺楸 ) in Chinese, "eumnamu" (음나무 ) in Korean, and "harigiri" (ハリギリ ; 針桐 ) in Japanese.
Document 2: Daphniphyllum: Daphniphyllum is the sole genus in the flowering plant family Daphniphyllaceae and was described as a genus in 1826. The genus includes evergreen shrubs and trees mainly native to east and southeast Asia, but also found in the Indian Subcontinent and New Guinea.
Document 3: Castanopsis: Castanopsis, commonly called chinquapin or chinkapin, is a genus of evergreen trees belonging to the beech family, Fagaceae. The genus contains about 120 species, which are today restricted to tropical and subtropical eastern Asia. A total of 58 species are native to China, with 30 endemic; the other species occur further south, through Indochina to Indonesia, and also in Japan. The English name chinkapin is shared with other related plants, including the golden chinkapins of the Pacific United States, which are sometimes included within "Castanopsis" but are more often considered a separate but very closely related genus, "Chrysolepis".
Document 4: Cestrum: Cestrum is a genus of - depending on authority - 150-250 species of flowering plants in the family Solanaceae. They are native to warm temperate to tropical regions of the Americas, from the southernmost United States (Florida, Texas: day-blooming cestrum, "C. diurnum") south to the Bío-Bío Region in central Chile (green cestrum, "C. parqui"). They are colloquially known as cestrums or jessamines (from "jasmine", due to their fragrant flowers).
Document 5: Chestnut: The chestnut group is a genus (Castanea) of eight or nine species of deciduous trees and shrubs in the beech family Fagaceae, native to temperate regions of the Northern Hemisphere.
Document 6: Hyoscyamus: Hyoscyamus — known as the henbanes — is a small genus of flowering plants in the nightshade family, Solanaceae. It comprises 11 species, all of which are toxic. It, along with other genera in the same family, is a source of the drug hyoscyamine (daturine).
Document 7: Datura (song): "Dātura" or "Datura" is a song written and recorded by American singer Tori Amos. It is the ninth song of Amos's fifth record "To Venus and Back", which was released in September 1999. It is included in the first disc of the double album subtitled "Orbiting" that contains eleven original studio recordings. The song lists the names of the plants found in Amos's garden and was created during the recording sessions of "To Venus and Back". The song's title refers to datura, a plant known for its toxic and hallucinogenic properties. Amos has never performed the song live due to its complex structure and time signatures which makes it hard to reproduce with a live band. However, in 2011 Amos incorporated the "room in my heart" bridge when performing "Take to the Sky" during her concert in Brussels on October 29, 2011 Video on YouTube . She also performed the song in a similar fashion throughout the Unrepentant Geraldines Tour.
Document 8: Datisca glomerata: Datisca glomerata is a species of plant native to California, Nevada, and Baja California known by the common name Durango root. It is one of only two to four species in the plant family Datiscaceae. It is an erect perennial herb with distinctive long, pointed, often sharply serrated leaves. It is said to superficially resemble "Cannabis" species. Its yellowish green flowers grow in clusters from the axilla of the leaf, where it joins the stem. A thick stand of the plant can form a medium-sized bush. All parts of this plant are toxic and in some areas it is considered a noxious weed. It is reported to be poisonous to cattle.
Document 9: Cunninghamia: Cunninghamia is a genus of one or two living species of evergreen coniferous trees in the cypress family Cupressaceae. They are native to China, northern Vietnam and Laos, and perhaps also Cambodia. They may reach 50 m in height. In vernacular use, it is most often known as "Cunninghamia", but is also sometimes called "China-fir" (though it is not a fir). The genus name "Cunninghamia" honours Dr. James Cunningham, a British doctor who introduced this species into cultivation in 1702 and botanist Allan Cunningham.
Document 10: 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 11: Brugmansia: Brugmansia is a genus of seven species of flowering plants in the family Solanaceae. They are woody trees or shrubs, with pendulous flowers, and have no spines on their fruit. Their large, fragrant flowers give them their common name of angel's trumpets, a name sometimes used for the closely related genus "Datura". (Datura differs from Brugmansia in that they are herbaceous bushes, with erect rather than pendulous flowers - and most have spines on their fruit).
Document 12: Castanospermum: Castanospermum australe (Moreton Bay Chestnut or Blackbean), the only species in the genus Castanospermum, is a flowering plant in the family Fabaceae, native to the east coast of Australia in Queensland and New South Wales, and to the Pacific islands of Vanuatu, New Caledonia, and the island of New Britain (Papua New Guinea). Members of this genus accumulate iminosugars in their leaves.
Document 13: Oak: An oak is a tree or shrub in the genus Quercus ( ; Latin "oak tree") of the beech family, Fagaceae. There are approximately 600 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably "Lithocarpus" (stone oaks), as well as in those of unrelated species such as "Grevillea robusta" (silky oaks) and the Casuarinaceae (she-oaks). The genus "Quercus" is native to the Northern Hemisphere, and includes deciduous and evergreen species extending from cool temperate to tropical latitudes in the Americas, Asia, Europe, and North Africa. North America contains the largest number of oak species, with approximately 90 occurring in the United States, while Mexico has 160 species of which 109 are endemic. The second greatest center of oak diversity is China, which contains approximately 100 species.
Document 14: Datura: Datura is a genus of nine species of poisonous vespertine flowering plants belonging to the family Solanaceae. They are commonly known as daturas, but also known as devil's trumpets, not to be confused with angel's trumpets, its closely related genus "Brugmansia". They are also sometimes called moonflowers, jimsonweed, devil's weed, hell's bells, thorn-apple, and many more. Its precise and natural distribution is uncertain, owing to its extensive cultivation and naturalization throughout the temperate and tropical regions of the globe. Its distribution within the Americas and North Africa, however, is most likely restricted to the United States and Mexico and Southern Canada in North America, and Tunisia in Africa, where the highest species diversity occurs.
Document 15: Hyoscyameae: Hyoscyameae is an Old World tribe of the subfamily Solanoideae of the flowering plant family Solanaceae. It comprises seven genera: "Anisodus", "Atropa", "Atropanthe", "Hyoscyamus", "Physochlaina", "Przewalskia" and "Scopolia". All seven genera of the tribe are poisonous and have a long tradition of use as medicinal plants, being rich in tropane alkaloids with anticholinergic properties. Furthermore, the genera "Atropa", "Hyoscyamus", "Scopolia" and "Physochlaina" have furnished entheogens - the first three in the historical context of European witchcraft and, more specifically, of the flying ointments employed in such practices, while the similar chemistry of the remaining genera points to the potential for entheogenic use. Six of the genera have dry, pyxidial fruits i.e. capsules dehiscing by an operculum and thus resembling a pot with a lid. The fruit of the remaining genus "Atropa" is a glossy, juicy berry, making "Atropa" species especially dangerous poisonous plants, since - unlike other Hyoscyameae - their attractive fruits may easily be mistaken for edible berries, particularly by children - as has frequently occurred in the case of "Atropa belladonna", the infamous Deadly Nightshade.
ground_truth: Castanopsis