Question: Which genus has more species, Oemleria or Lygodium?

full_context: Document 1: Oemleria: Oemleria cerasiformis, a shrub commonly known as osoberry or Indian plum, is the sole species in genus Oemleria.
Document 2: Elaeagnus umbellata: Elaeagnus umbellata is known as Japanese silverberry, umbellata oleaster, autumn olive, autumn elaeagnus, or spreading oleaster. The species is indigenous to eastern Asia and ranges from the Himalayas eastwards to Japan. Because it fixes atmospheric nitrogen in its roots, it often grows vigorously and competitively in infertile soils.
Document 3: Chaenomeles: Chaenomeles is a genus of three species of deciduous spiny shrubs, usually 1–3 m tall, in the family Rosaceae. They are native to Japan, Korea, China, Bhutan, and Burma. (Burmese: ချဉ်စော်ကား ) These plants are related to the quince ("Cydonia oblonga") and the Chinese quince ("Pseudocydonia sinensis"), differing in the serrated leaves that lack fuzz, and in the flowers, borne in clusters, having deciduous sepals and styles that are connate at the base.
Document 4: Chaenomeles: Chaenomeles is a genus of three species of deciduous spiny shrubs, usually 1–3 m tall, in the family Rosaceae. They are native to Japan, Korea, China, Bhutan, and Burma. (Burmese: ချဉ်စော်ကား ) These plants are related to the quince ("Cydonia oblonga") and the Chinese quince ("Pseudocydonia sinensis"), differing in the serrated leaves that lack fuzz, and in the flowers, borne in clusters, having deciduous sepals and styles that are connate at the base.
Document 5: Athyrium: Athyrium (lady-fern) is a genus of about 180 species of terrestrial ferns, with a cosmopolitan distribution. It is placed in the family Athyriaceae, in the order Polypodiales.
Document 6: Polystichum: Polystichum is a genus of about 260 species of ferns with a cosmopolitan distribution. The highest diversity is in eastern Asia, with about 120 species in China alone; the region from Mexico to Brazil has nearly 100 additional species; Africa (17 species), North America (15 species), and Europe (5 species) have much lower diversity. Polystichum species are terrestrial or rock-dwelling ferns of warm-temperate and montane-tropical regions (a few species grow in alpine regions).
Document 7: Lygodium palmatum: Lygodium palmatum is the only species of its genus native to North America. Unlike most species in the genus, this one, called the American climbing fern (or Hartford fern, after Hartford, Connecticut), is extremely hardy in temperate zones.
Document 8: Elaeagnus multiflora: Elaeagnus multiflora, the cherry elaeagnus, cherry silverberry, goumi, gumi, or natsugumi, is a species of "Elaeagnus" native to China, Korea, and Japan.
Document 9: Berberis aristata: Berberis aristata, also known as Indian barberry, "chutro" or tree turmeric, is a shrub belonging to the family Berberidaceae and the genus "Berberis". The genus comprises approximately 450-500 species of deciduous evergreen shrubs and is found in the temperate and sub-tropical regions of Asia, Europe, and America. "B. aristata" is native to the Himalayas in India and in Nepal. It is also naturally found in the wet zone of Sri Lanka.
Document 10: Darmera: Darmera peltata (Indian rhubarb or umbrella plant) is a flowering plant, the only species within the genus Darmera in the family Saxifragaceae. It is a slowly spreading rhizomatous perennial native to mountain streamsides in woodland in the western United States (southwestern Oregon to northwestern California), growing to 2 m tall by 1 m wide. The name "Darmera" comes after Karl Darmer, a Berlin horticulturist from 19th century.
Document 11: Cotoneaster dammeri: Cotoneaster dammeri, the bearberry cotoneaster, is a species of flowering plant in the genus "Cotoneaster", belonging to the Rosaceae family, native to central and southern China (Gansu, Guizhou, Hubei, Sichuan, Tibet and Yunnan) and naturalized in Europe.
Document 12: Adiantum diaphanum: Adiantum diaphanum, the filmy maidenhair fern, is a species of fern in the genus "Adiantum", native to East Asia and Australasia, from southern Japan south to New Zealand. It grows to 20 cm long at the most, with very dark green fronds covered with bristles.
Document 13: Lygodium: Lygodium (climbing fern) is a genus of about 40 species of ferns, native to tropical regions across the world, with a few temperate species in eastern Asia and eastern North America. It is the sole genus in the family Lygodiaceae, though included in the family Schizaeaceae by some botanists.
Document 14: Microlepia strigosa: Microlepia strigosa, known as hay-scented fern, lace fern, rigid lace fern and palapalai in Hawaiian, is a fern indigenous to the Hawaiian islands and is also native to other parts of the tropics and subtropics including India and Malaysia. This fern belongs to a group of about seventy "Microlepia" species in the bracken or hay-scented fern family (Dennstaedtiaceae). There are two indigenous species and a hybrid found in the main Hawaiian Islands. It is also known by the botanical names: "Davallia hirta", "Davallia setosa", "Davallia strigosa", "Dicksonia kaulfussiana", "Dicksonia strigosa", "Microlepia hirta", "Microlepia setosa", "Stenoloma tenuifolium", "Trichomanes strigosum". It has coarse, light to medium green fronds which can grow to more than 3 feet long.
Document 15: Athyrium filix-femina: Athyrium filix-femina, the lady fern or common lady-fern, is a large, feathery species of fern native throughout most of the temperate Northern Hemisphere, where it is often abundant (one of the more common ferns) in damp, shady woodland environments and is often grown for decoration.
ground_truth: Lygodium