Which genus has more species, Wahlenbergia or Horminum?
Wahlenbergia Wahlenbergia is a genus of between 150–270 species of flowering plants in the family Campanulaceae, with a cosmopolitan distribution except for North America; the highest species diversity is in Africa and Australasia. "Wahlenbergia" species have dispersed widely, even to oceanic islands, and there are four species known from the island of Saint Helena, including the now extinct species "W. roxburghii". The genus was named after Göran Wahlenberg (a Swedish botanist who taught at Uppsala University) by German botanist H. A. Schrader (Heinrich Schrader), in 1814.
Ranunculus Ranunculus is a genus of about 500 species (Ranunculaceae)] of plants in the Ranunculaceae. Members of the genus include the buttercups, spearworts, and water crowfoots. The petals are often highly , especially in yellow species, owing to a special coloration mechanism: the petal's upper surface is very smooth causing a mirror-like reflection. The flash aids in attracting pollinating insects and temperature regulation of the flower's reproductive organs. Buttercups usually flower in the spring, but flowers may be found throughout the summer, especially where the plants are growing as opportunistic colonizers, as in the case of garden weeds.