Question: What plant genus has more species, Dichroa or Cyananthus?

Context paragraphs:
Dorstenia: Dorstenia is a predominately Old and New World plant genus within the family Moraceae, but there is one "Dorstenia" species that is located in Indonesia and South Asia.  There are 105 species within this genus that are fairly equally distributed between the Afrotropics and Neotropics, second only in number to the "Ficus" genera in Moraceae, but "Dorstenia" is unique when compared to other members of the Moraceae because of their extremely diverse growth habits and life forms.  The majority of the Moraceae is woody perennials, while "Dorstenia" is dominated by herbaceous, succulent, or suffrutescent perennials, and only 10% exhibit the typical woody habit of the Moraceae.  "Dorstenia" also have a striking reproductive structure composed of clusters of bisexual flowers on disc-shaped receptacles that are often adorned with variable size and shape bracts.  Like most members of the Moraceae, "Dorstenia" have drupe fruits like peaches (peaches are not a member of the Moraceae), but another special feature of "Dorstenia" drupes is that they explode to release the seed.  The seeds are usually small with a minuscule endosperm.  The "Dorstenia" genus is also well known by indigenous people in the tropics as a medicinal plant with numerous flavonoid compounds that have anti-microbial, anti-reverse transcriptase, and anti-inflammatory effects.

Dichroa: Dichroa is a genus of 12 species of flowering plants in the family Hydrangeaceae, native to eastern and southeastern Asia.  They are deciduous shrubs growing to 1-3 m tall, with their leaves arranged in opposite pairs.  The flowers are produced in a broad inflorescence similar to that of the related genus "Hydrangea".  The fruit is a glossy metallic purple-blue berry.

Macrotera: Macrotera is a genus of bees native to North America, particularly diverse in the desert regions of the United States and Mexico.  According to Wilson and Carril, there are "around 30" species of "Macrotera".  "Macrotera" are small to medium sized (2.0 mm to 16.0 mm) and often black or reddish in coloration.  The genus was treated by P.H. Timberlake who, in addition to T.D.A. Cockerell, described most of the known species.  "Macrotera" used to be considered part of the genus "Perdita" but was split apart by C.D. Michener in 2000.  Most species are extreme specialists (oligoleges) with respect to pollen and will only collect pollen from a few closely related species or genera of plants, paricularly the plant genus Spharalcea and various Cactaceae.

Tibouchina: Tibouchina Aubl.  is a Neotropical flowering plant genus in Melastomataceae Juss.  that contains approximately 240 species.  Species of this genus are herbs, shrubs or trees and typically have purple flowers.  They are native to Mexico, the Caribbean, and South America where they are found as far south as northern Argentina.  Members of this genus are known as glory bushes, glory trees or princess flowers.  The name "Tibouchina" is adapted from a Guianan indigenous name for a member of this genus .  A recent systematic study has shown that this genus is paraphyletic.

Falconeria: Falconeria is a monotypic plant genus in the family Euphorbiaceae, first described as a genus in 1839.  The genus is sometimes included within the genus "Sapium".  The sole species is Falconeria insignis.  The plant is found from India, Nepal, Bangladesh, and Sri Lanka to Indochina, China (Hainan, Sichuan, Yunnan), Thailand and Peninsular Malaysia.

Acrosticta dichroa: Acrosticta dichroa is a species of ulidiid or picture-winged fly in the genus "Acrosticta" of the family Ulidiidae.

Aldrovanda vesiculosa: Aldrovanda vesiculosa, commonly known as the waterwheel plant, is the sole extant species in the flowering plant genus "Aldrovanda" of the family Droseraceae.  The plant captures small aquatic invertebrates using traps similar to those of the Venus flytrap.  The traps are arranged in whorls around a central, free-floating stem, giving rise to the common name.  This is one of the few plant species capable of rapid movement.

Hesperelaea: Hesperelaea is a plant genus with only one species, probably now extinct.  Hesperelaea palmeri was found only on Guadalupe Island, a small island in the Pacific Ocean, part of the Mexican state of Baja California, about 400 km southwest of Ensenada.  The last collection of the plant on the island was in 1875, so the species and the genus must now be presumed extinct.  An intensive search for the plant in 2000 was unsuccessful.

Cyananthus: Cyananthus is a genus that consists of about 30 species of annual or mostly perennial herbs from high mountains of Central and East Asia.  They are little Himalayan plants not higher than 4in.  The name comes from the "Greek" for blue flowers.  Leaves are usually small and simple, sometimes narrowing to base, tooth-lobed at summit.  In August to September, the plants bear showy of bright purplish-blue, yellow or white, funnel to bell-shaped, 5-lobed flowers 1in in diameter with stamens free from the corolla and hairy throat.  The flowers are borne singly on stalks.  They always lose the aerial parts during the coldest months, and as spring begins, stems and leaves quickly start to reproduce.

Banksia sessilis: Banksia sessilis, commonly known as parrot bush, is a species of shrub or tree in the plant genus "Banksia" in the family Proteaceae.  It had been known as Dryandra sessilis until 2007, when the genus "Dryandra" was sunk into "Banksia".  The Noongar peoples know the plant as Budjan or Butyak.  Widespread throughout southwest Western Australia, it is found on sandy soils over laterite or limestone, often as an understorey plant in open forest, woodland or shrubland.  Encountered as a shrub or small tree up to 6 m in height, it has prickly dark green leaves and dome-shaped cream-yellow flowerheads.  Flowering from winter through to late spring, it provides a key source of food—both the nectar and the insects it attracts—for honeyeaters in the cooler months, and species diversity is reduced in areas where there is little or no parrot bush occurring.  Several species of honeyeater, some species of native bee, and the European honey bee seek out and consume the nectar, while the long-billed black cockatoo and Australian ringneck eat the seed.  The life cycle of "Banksia sessilis" is adapted to regular bushfires.  Killed by fire and regenerating by seed afterwards, each shrub generally produces many flowerheads and a massive amount of seed.  It can recolonise disturbed areas, and may grow in thickets.

Supporting paragraphs: Dichroa Cyananthus
Answer: Cyananthus