Question: Between Willow and Darwinia, which genus has more species?

full_context: Document 1: Salix myrsinifolia: Salix myrsinifolia, known as the dark-leaved willow or myrsine-leaved willow, is a species of willow native to Europe and Western Siberia. It forms a 2 - high shrub. In the north it becomes often a tree up to 8 m tall.
Document 2: Salix humboldtiana: Salix humboldtiana, the Humboldt's willow, is a tree species of willow native to North and South America, growing along watercourses.
Document 3: Willow: Willows, also called sallows, and osiers, form the genus Salix, around 400 species of deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions of the Northern Hemisphere. Most species are known as willow, but some narrow-leaved shrub species are called osier, and some broader-leaved species are referred to as sallow (from Old English "sealh", related to the Latin word "salix", willow). Some willows (particularly arctic and alpine species) are low-growing or creeping shrubs; for example, the dwarf willow ("Salix herbacea") rarely exceeds 6 cm in height, though it spreads widely across the ground.
Document 4: Blandfordia: Blandfordia is a genus of flowering plants, placed in the family Blandfordiaceae of the order Asparagales of the monocots. The genus is native to eastern Australia. Plants in this genus are commonly referred to as Christmas bells due to the shape of their flowers and the timing of their flowering season in Australia. "Blandfordia" was named by English botanist James Edward Smith in 1804 in honour of George Spencer-Churchill, 5th Duke of Marlborough, the Marquis of Blandford.
Document 5: Calothamnus lehmannii: Calothamnus lehmannii, commonly known as dwarf claw flower, is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a low-lying, sometimes ground-hugging shrub with long, thin, cylindrical leaves and clusters of red flowers that are smaller than any others in the genus "Calothamnus".
Document 6: Verticordia: Verticordia is a genus of more than 100 species of plants commonly known as featherflowers, in the myrtle family, Myrtaceae. They range in form from very small shrubs such as "V. verticordina" to trees like "V. cunninghamii", some spindly, others dense and bushy, but the majority are woody shrubs up to 2.0 m tall. The flowers are variously described as "feathery", "woolly" or "hairy" and are found in most colours except blue. They often appear to be in rounded groups or spikes but in fact are always single, each flower borne on a separate stalk in a leaf axil. Each flower has five sepals and five petals all of a similar size with the sepals often having feathery or hairy lobes. There are usually ten stamens alternating with variously shaped staminodes. The style is simple, usually not extending beyond the petals and often has hairs near the tip. All but two species are found in Southwest Australia, the other two occurring in the Northern Territory.
Document 7: Calothamnus: Calothamnus is a genus of shrubs in the family Myrtaceae and is endemic to the south-west of Western Australia. The common names one-sided bottlebrush or claw flower are given to some species due to their having the flowers clustered on one side of the stem or because of the claw-like appearance of their flowers. "Calothamnus" species are generally medium to tall woody shrubs with crowded leaves. In most species the leaves are crowded and linear in shape, and the flowers are usually arranged in dense clusters. The petals are small and fall off the flower soon after it opens but the stamens are long, numerous and usually bright red.
Document 8: Leptospermum: Leptospermum is a genus of shrubs and small trees in the myrtle family Myrtaceae commonly known as tea trees, although this name is sometimes also used for some species of "Melaleuca". Most species are endemic to Australia, with the greatest diversity in the south of the continent but some are native to other parts of the world, including New Zealand and Southeast Asia. Leptospermums all have five conspicuous petals and five groups of stamens which alternate with the petals. There is a single style in the centre of the flower and the fruit is a woody capsule. The first formal description of a leptospermum was published in 1776 by the German botanists Johann Reinhold Forster and his son Johann Georg Adam Forster, but an unambiguous definition of individual species in the genus was not achieved until 1979. Leptospermums grow in a wide range of habitats but are most commonly found in moist, low-nutrient soils. They have important uses in horticulture, in the production of honey and in floristry.
Document 9: Darwinia (plant): Darwinia, sometimes commonly known as mountain bells or simply bells, is a genus of about 70 species of evergreen shrubs in the family Myrtaceae, endemic to southeastern and southwestern Australia. The majority are native to southern Western Australia, but a few species occur in South Australia, New South Wales and Victoria. The genus was named in honour of Erasmus Darwin, grandfather of Charles Darwin by Edward Rudge in 1816. Most darwinias grow to a height of between 0.2 and 3 m and many are prostrate shrubs. Most have small, simple leaves and the flowers are often grouped together, each flower with five red, white or greenish petals and ten stamens. In many species, the flowers are surrounded by large, colourful bracts, giving rise to their common names.
Document 10: Salix acutifolia: Salix acutifolia, also known as Siberian violet-willow, long-leaved violet willow or sharp-leaf willow, is a species of flowering plant in the Salicaceae family, native to Russia and eastern Asia. It is a spreading, deciduous shrub or tree, growing to 10 m tall by 12 m wide. The young shoots are deep purple with a white bloom. The leaves are narrow, up to 10 cm long. The catkins are produced in early spring, before the leaves. Older bark has a fine, netted pattern.
Document 11: Darwinia diosmoides: Darwinia diosmoides is a shrub which is endemic to the south-west of Western Australia. It usually grows to between 0.3 and 1.2 metres in height and produces white flowers. The species was formally described in 1828 by Swiss botanist Augustin Pyramus de Candolle who gave it the name "Genetyllis diosmoides". It was transferred to the genus "Darwinia" in 1865 by English botanist George Bentham.
Document 12: Salix atrocinerea: Salix atrocinerea, commonly called grey willow or large gray willow, is a species of willow. It is a bush or small tree up to 12 m tall. As a pioneer species of willow, it quickly colonizes poor soils.
Document 13: Salix caroliniana: Salix caroliniana, commonly known as the coastal plain willow, is a shrub or small tree native to the southeastern United States, Mexico and parts of Central America and the Caribbean. It is an obligate wetland species and grows as an emergent species in the Everglades. In the absence of fire, "S. caroliniana" can convert herbaceous wetlands to forested wetlands. Although fires kill large woody stems and the species does not reproduce by rhizomes or root sprouts, it sprouts readily after fire. As a result, the total number of stems does not change, but fire converts "S. caroliniana" from a tree into a shrub.
Document 14: Salix warburgii: Salix warburgii is a plant of the genus "Salix", the willows, endemic to Taiwan. It can be found among shrubs near water. growing 15 m tall. Liliaceae is the most fortunate plant in the vascular plant. It can live the most northern where is in the polar environment. In the tropical edge of the formation of endemic species in Taiwan is the reason for the rapid evolution of species in a special environment. The evolution of the results of the time and space, In addition to water willow outside the southeastern China's other multi-stamens willow and the four sub-Liu will have a similar situation, and these special willow plants are also known as tropical willow. Salix warburgii in Taiwan's distribution is low Elevation of the shrub and the river bank, because the cutting method is easy to survive so there is no artificial introduction of cultivation.
Document 15: Inocybe salicis: Inocybe salicis is an uncommon species of fungus found in association with willow in Europe. The species produces small, brown or yellow mushrooms with caps up to 2.5 cm across, with stems up to 3.5 cm long. The species is similar in appearance to several other closely related species in the genus "Inocybe" that also associate with willow, and so is most reliably differentiated microscopically.
ground_truth: Darwinia