Question: Which plant has more species, Silybum or Bauhinia?

Context paragraphs:
Bauhinia japonica: Bauhinia japonica () is a species of flowering plant in the Fabaceae family which can be found in Guangdong, Hainan and Japan.

Bauhinia variegata: Bauhinia variegata is a species of flowering plant in the family Fabaceae.  It is native to South Asia and Southeast Asia, from southern China, Burma, India, Nepal, Pakistan, and Sri Lanka.  Common names include orchid tree, camel's foot tree, kachnar and mountain-ebony.

Phanera purpurea: Phanera purpurea is a species of flowering plant in the family Fabaceae, native to South China (which includes Hong Kong) and Southeast Asia.  Common names include orchid tree, Hong Kong orchid tree, purple bauhinia, camel's foot, butterfly tree, and Hawaiian orchid tree.

Bauhinia tomentosa: Bauhinia tomentosa, the yellow bauhinia or yellow bell orchid tree, is a species of legume in the Fabaceae family.  It is found only in Mozambique, Zimbabwe, India and Sri Lanka.  The plant is known to have antimicrobial activity against Gram-positive bacteria. They are known as "மந்தாரை" ("mandharai")

Bauhinia lunarioides: Bauhinia lunarioides is a species of flowering plant in the family Fabaceae, native to Southwestern Texas in the United States and Northern Mexico.  Common names include Texasplume, Anacacho orchid tree, and pata de vaca.

Silybum: Silybum (milk thistle) is a genus of two species of thistles in the (daisy family).  The plants are native to the Mediterranean regions of Europe, North Africa, and the Middle East.  One species has been introduced elsewhere, including in North America.  The name "milk thistle" derives from a feature of the leaves, which are prominently banded with splashes of white.  Historically, these milky bands were said to be Mother Mary's milk, and this is the origin of another common name, St. Mary's thistle.  The most widespread species is "Silybum marianum".

Callicercops milloti: Callicercops milloti is a moth of the Gracillariidae family.  It is known from Madagascar.  The larvae feed on "Bauhinia" species.  They roll the leaf of their host plant.

Lysiphyllum cunninghamii: Lysiphyllum cunninghamii, commonly known as the Kimberley Bauhinia or Jigal Tree, is a species of plant in the Fabaceae family.  It is native to northern Australia where it occurs from Western Australia through the Northern Territory to Queensland.

Bauhinia: Bauhinia is a genus of more than 500 species of flowering plants in the subfamily Cercidoideae of the large flowering plant family Fabaceae, with a pantropical distribution.  The genus was named after the Bauhin brothers, Swiss-French botanists.

Lysiphyllum hookeri: Lysiphyllum hookeri is a species of small tree endemic to Queensland, Australia, of the legume plant family Fabaceae.  These trees are known by a variety of common names, including pegunny, alibangbang, Hooker's bauhinia, white bauhinia, mountain ebony and Queensland ebony.

Supporting paragraphs: Silybum Bauhinia
Answer: Bauhinia