Which plant has more species, Silybum or Bauhinia?
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".
Ceiba Ceiba is a genus of trees in the Malvaceace family, native to tropical and subtropical areas of the Americas (from Mexico and the Caribbean to N Argentina) and tropical West Africa. Some species can grow to 70 m tall or more, with a straight, largely branchless trunk that culminates in a huge, spreading canopy, and buttress roots that can be taller than a grown person. The best-known, and most widely cultivated, species is Kapok, "Ceiba pentandra", one of several trees called kapok.