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

Context paragraphs:
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.

Sideroxylon salicifolium: Sideroxylon salicifolium, commonly called white bully or willow bustic, is a species of flowering plant native to Florida, the West Indies and Central America.  It has also been considered a member of the genus "Dipholis", with the binomial "Dipholis salicifolia".  Its specific epithet is derived from the Latin "salix" 'willow' and "folia" 'leaf'.

Verticordia sect. Elachoschista: Verticordia" sect.  "Elachoschista is one of eleven sections in the subgenus "Verticordia".  It includes a single species in the genus "Verticordia".  Plants in this section resemble those in section "Infuscata" except that the sepal lobes are not divided but may have an irregularly toothed edge.  Plants in this section superficially resemble some of the smaller "Darwinia" species.  The leaves are crowded and the flower are cream-coloured, turning greenish-brown as they age.  When Alex George reviewed the genus in 1991 he formally described this section, publishing the description in the journal Nuytsia.  The name "Elachoschista" is derived from the Ancient Greek words "elachys" meaning "little" and "schizo" meaning "cut" referring to the sepals which have almost smooth edges.

Calliergon cordifolium: Calliergon cordifolium is a species of moss in the Amblystegiaceae family commonly known as the calliergon moss (though this name refers to the genus "Calliergon" generally) or heart-leaved spearmoss.  The species is abundant in the right habitat, and grows in marshes and wet woodland, especially woodland of alder ("Alnus") or willow ("Salix"), as well as around streams, ditches and pools.  The species grows in tufts among other moss species.  "Calliergon cordifolium" requires a wet environment to grow, and often grows completely submerged in water.  It typically prefers lowland, but has been recorded as high as 910 m above sea level in Inverness, Scotland.  The species has a circumpolar Boreo-temperate distribution.  It is found throughout Europe (including north, into the Arctic Circle - Svalbard, the Faeroe Islands, Iceland and Greenland - and east into the Caucasus).  It has been recorded in north and central Asia, as well as Turkey and Japan, throughout North America and in New Zealand.

Marsh tit: The marsh tit ("Poecile palustris") is a passerine bird in the tit family Paridae and genus "Poecile", closely related to the willow, Père David's and Songar tits.  It is small (around 12 cm long and weighing 12 g) with a black crown and nape, pale cheeks, brown back and greyish-brown wings and tail.  Between 8 and 11 subspecies are recognised.  This bird's close resemblance to the willow tit can cause identification problems, especially in the United Kingdom where the local subspecies of the two are very similar (there, they were not recognised as separate species until 1897).

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.

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.

Barkleyanthus: Barkleyanthus is a monotypic genus.  of flowering plants in the aster family, Asteraceae, containing the single species Barklyanthus salicifolius, a plant formerly classified in the genus "Senecio" It is native to North and Central America, where its distribution extends from the southwestern United States to El Salvador.  Its common names include willow ragwort, willow groundsel, Barkley's-ragwort, and jarilla.

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.

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.

Supporting paragraphs: Willow Darwinia (plant)
Answer: Darwinia