Question: Which genus contains more species, Asarina or Wigandia?

full_context: Document 1: Wislizenia: Wislizenia is a genus of flowering plants containing three recognized species native to the southwestern United States and northern Mexico. Common names include spectacle fruit and jackass clover. Like genus "Cleome" and several relatives, "Wislizenia" has traditionally been included in the caper family, Capparaceae, but has more recently been moved to the new family Cleomaceae.
Document 2: 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.
Document 3: Ruscus: Ruscus is a genus of six species of flowering plants, native to western and southern Europe (north to southern England), Macaronesia, northwest Africa, and southwestern Asia east to the Caucasus. In the APG III classification system, it is placed in the family Asparagaceae, subfamily Nolinoideae (formerly the family Ruscaceae). Like many lilioid monocots, it was formerly classified in the family Liliaceae.
Document 4: Asperula: Asperula, commonly known as woodruff, is a genus of flowering plants in the Rubiaceae family. It contains about 195 species and has a wide distribution area from Europe, northern Africa, temperate and subtropicale Asia to Australasia.
Document 5: Sinningia: Sinningia is a genus of flowering plants in the family Gesneriaceae. It is named after Wilhelm Sinning (1792-1874), a gardener of the Botanische Gärten der Friedrich-Wilhelms-Universität Bonn. There are about 65 species of tuberous herbaceous perennials, all occurring in Central and South America, with the greatest concentration of species occurring in southern Brazil.
Document 6: Wigandia: Wigandia is a genus of flowering plants within the waterleaf subfamily, Hydrophylloideae. They are found mainly in Central America and South America, though one or two species are found as far north as the United States. Some are grown as ornamental plants and will flourish in most Mediterranean or temperate regions. The genus is named for Johann Wigand (ca. 1523-1587), German Lutheran cleric and theologian, and Bishop of Pomesania.
Document 7: Asperula arvensis: Asperula arvensis, known as blue woodruff, is a species of flowering plant in the Rubiaceae family. It belongs to the genus "Asperula". It is native to most of Europe plus Algeria, Morocco, and southwest Asia from Turkey to Kyrgyzstan.
Document 8: Mimulus: Mimulus is a plant genus in the family Phrymaceae, which was traditionally placed in family Scrophulariaceae. The genus now contains only seven species, two native to eastern North America and the other five native to Asia, Australia, Africa, or Madagascar. In the past, about 150 species were placed in this genus, most of which have since been assigned to other genera, the majority to genus "Erythranthe". "Mimulus
Document 9: Fontanesia: Fontanesia is a genus of flowering plants in the family Oleaceae, usually treated as comprising a single species Fontanesia phillyreoides, though some authors split this into two species (see below). It is native to southern Europe (Sicily), southwestern Asia (Lebanon, Syria, Turkey) and eastern Asia (China), with two well-separated populations.
Document 10: Justicia (plant): Justicia is a genus of flowering plants in the family Acanthaceae. There are 658 species with a further 611 species as yet unresolved by Kew. They are native to tropical to warm temperate regions of the Americas, India and Africa. Common names include water-willow and shrimp plant, the latter from the inflorescences, which resemble a shrimp in some species. The generic name honours Scottish horticulturist James Justice (1698–1763). They are closely related to "Pachystachys".
Document 11: Asarina: Asarina is a flowering plant genus of only one species, Asarina procumbens, the trailing snapdragon, which is native to southern Europe. Originally placed in the Scrophulariaceae (figwort family), the genus has more recently been moved to the Plantaginaceae (plantain family). Species from North America formerly placed in the genus "Asarina" are now placed in "Holmgrenanthe", "Lophospermum", "Mabrya" and "Maurandya", as well as "Neogaerrhinum". "Asarina" is now regarded as exclusively an Old World genus.
Document 12: Eupatorieae: Eupatorieae is a tribe of over 2000 species of plants in the aster family. Most of the species are native to tropical, subtropical, and warm temperate areas of the Americas, but some are found elsewhere. Well-known members are "Stevia rebaudiana" (used as a sugar substitute), a number of medicinal plants ("Eupatorium"), and a variety of late summer to autumn blooming garden flowers, including "Ageratum" (flossflower) and "Conoclinium" (mistflower).
Document 13: Antirrhineae: The Antirrhineae are one of the 12 tribes of the Plantaginaceae family. It contains the toadflax relatives, such as snapdragons. They are probably most closely related to the turtlehead tribe (Cheloneae) and/or a large and badly resolved core group of their family including plants as diverse as water-starworts ("Callitriche"), foxgloves ("Digitalis"), and speedwell ("Veronica"). The Antirrhineae include about 30 genera with roughly 320 species, of which 150 are in genus "Linaria". The type genus is "Antirrhinum" .
Document 14: Weigela: Weigela is a genus of between six and 38 species of deciduous shrubs in the family Caprifoliaceae, growing to 1–5 m (3-15') tall. All are natives of eastern Asia. The genus is named after the German scientist Christian Ehrenfried Weigel.
Document 15: Egeria densa: Egeria densa, the large-flowered waterweed or Brazilian waterweed, is a species of "Egeria" native to warm temperate South America in southeastern Brazil, Argentina, and Uruguay. It is considered a problematic invasive species due to its use in home aquariums and subsequent release into non-native habitats.
ground_truth: Wigandia