Question: Which genus has more species Fatsia or Leuchtenbergia ?

Context paragraphs:
Leuchtenbergia: Leuchtenbergia principis (agave cactus or prism cactus), the sole species of the genus Leuchtenbergia, is a species of cactus.  It is native to north-central Mexico (San Luis Potosi, Chihuahua).  The genus is named after Maximilian Eugen Joseph (1817–1852), Duke of Leuchtenberg and amateur botanist.

Fatsia: Fatsia is a small genus of three species of evergreen shrubs native to southern Japan and Taiwan.  They typically have stout, sparsely branched stems bearing spirally-arranged, large leathery, palmately lobed leaves 20–50 cm in width, on a petiole up to 50 cm long, and small creamy-white flowers in dense terminal compound umbels in late autumn or early winter, followed by small black fruit.

Tetrapanax: Tetrapanax papyrifer (rice-paper plant, or "通草—tong cao") is an evergreen shrub in the family Araliaceae, the sole species in the genus Tetrapanax.  The specific epithet is frequently misspelled as "papyriferum", "papyriferus", or "papyrifera".  It is endemic to Taiwan, but widely cultivated in East Asia and sometimes in other tropical regions as well.  The species was once included in the genus "Fatsia" as "Fatsia papyrifera".

Boninofatsia: Boninofatsia is a genus of shrubs of family Araliaceae, with two species.  The genus is sometimes included in "Fatsia".

Oplopanax: Oplopanax is a small genus of flowering plants in the family Araliaceae, consisting of three species of deciduous shrubs, native to western North America and northeastern Asia.  "Oplopanax" is closely related to the Asian genus "Fatsia".

Supporting paragraphs: Fatsia Leuchtenbergia
Answer: Fatsia