Nasturtium is a genus of seven plant species in the family Brassicaceae (cabbage family), best known for the edible watercresses "Nasturtium microphyllum" ("Rorippa microphylla") and "Nasturtium officinale" ("R. nasturtium-aquaticum").
 "Nasturtium" was previously synonymised with "Rorippa", but molecular evidence supports its maintenance as a distinct genus more closely related to "Cardamine" than to "Rorippa" "sensu stricto" (Al-Shehbaz & Price, 1998; Al-Shehbaz, Beilstein & Kellogg, 2006).
 Yellowcress is a common name for plants in this genus.
Cardamine impatiens, the narrowleaf bittercress or narrow-leaved bitter-cress, is a plant species of the genus "Cardamine" belonging to the family Brassicaceae.
 It is a slender, biennial herb, that produces sterile leaves in the first year, one to several flowering stems during the next.
 Its leaves are pinnate with several pairs of lanceolate, dentate leaflets and a terminal, slightly longer leaflet.
 The short petals surpass the calyx by half of its length.
 The seeds are arranged in one row on each side of the central membrane of the narrow pod and are ejected out in a shower due to the tension formed as the seed pod (silique) dries.
 It grows on walls, open ground in shady places in forests usually disturbed by man.
Azadirachta is a genus of two species of trees in the mahogany (Meliaceae) family.
 Numerous species have been proposed for the genus but only two are currently recognized, "Azadirachta excelsa" and the economically important tree "Azadirachta indica".
 The latter is informally called the Neem tree; see also Neem oil.
 Both species are native to the Indomalaysian region, and "A. indica" is also widely cultivated and naturalized outside its native range.
Cardamine (bittercress or bitter-cress) is a large genus of flowering plants in the family Brassicaceae.
 It contains more than 150 species of annuals and perennials.
 The genus grows worldwide in diverse habitats, except the Antarctic.
 Genus Dentaria is a synonym for "Cardamine".
Azadirachta indica (commonly known as neem, nimtree and Indian lilac) is a tree in the mahogany family Meliaceae.
 It is one of two species in the genus "Azadirachta", and is native to the Indian subcontinent, i.e. India, Nepal, Pakistan, Bangladesh, Sri Lanka, and Maldives.
 It typically is grown in tropical and semi-tropical regions.
 Neem trees now also grow in islands located in the southern part of Iran.
 Its fruits and seeds are the source of neem oil.

Question: Which genus has more species, Cardamine or Azadirachta?
Answer: Cardamine