Question: Which plant has more species, Mukdenia or Brunfelsia?

Context paragraphs:
Brunfelsia pauciflora: Brunfelsia pauciflora is a species of flowering plant in the family Solanaceae, the nightshades.  It is endemic to Brazil, and it is grown in cultivation.  Its common names include yesterday-today-and-tomorrow, morning-noon-and-night, Kiss Me Quick, and Brazil raintree.

Brunfelsia membranacea: Brunfelsia membranacea is a species of flowering plant in the family Solanaceae, the nightshades.  It is endemic to Jamaica.

Brunfelsia plowmaniana: Brunfelsia plowmaniana is a species of flowering plant of the nightshade family that is native to the cloud forests of the Bolivian and Argentinian Andes.  It was first described in 2012 on the basis of systematic DNA barcoding of specimens from the genus "Brunfelsia".  Specimens belonging to the new species had previously been placed in the polymorphic species "B. uniflora", which a molecular phylogeny revealed as polyphyletic.

Brunfelsia splendida: Brunfelsia splendida is a species of plant in the Solanaceae family.  It is endemic to Jamaica.

Mukdenia: Mukdenia is a genus of plants in the saxifrage family, Saxifragaceae, consisting of 2 species.  They are native to woodland areas of east Asia and Japan.

Brunfelsia: Brunfelsia is a genus of flowering plants in the family Solanaceae, the nightshades.  There are about 50 species described.  Linnaeus named the genus for the early German herbalist Otto Brunfels (1488–1534).  Common names for the genus include raintree.

Brunfelsia latifolia: Brunfelsia latifolia is a species of flowering plant in the nightshade family.  It is endemic to Brazil.  It is an evergreen shrub that becomes semi-deciduous in cooler areas and grows up to 1.8 meters (6 feet) in height.

Brunfelsia densifolia: Brunfelsia densifolia is a species of flowering plant in the nightshade family known by the common name Serpentine Hill raintree.  It is native to Puerto Rico.

Brunfelsia portoricensis: Brunfelsia portoricensis, the Puerto Rico raintree, is a species of flowering plant in the family Solanaceae.  It is endemic to Puerto Rico, where it occurs in El Yunque National Forest.

Brunfelsia jamaicensis: Brunfelsia jamaicensis is a species of flowering plant in the family Solanaceae, the nightshades.  It is endemic to Jamaica, where it grows in mountain forests above 1400 meters in elevation.

Supporting paragraphs: Mukdenia Brunfelsia
Answer: Brunfelsia