Inflorescences of Cephalanthus and Sylvainia. A–G. Inflorescences of Cephalanthus showing different arrangements of the complex inflorescences, with the circles representing glomeruli (gl). Each drawing represents an increase in the complexity of the branching. A–D. Inflorescences with foliaceous bracts (br) at the base and reduced bracts (re-br) above. A1 and A2 indicate glomeruli. E–G. The foliaceous bracts appear in two (G) or more whorls (E–F). H–I. Inflorescence of Sylvainia, only represented by an axis ending in an apical glomerule. H. A relatively young branch with a few older nodes. I. An old flowering branch with numerous old nodes of previous blooms. Drawn by Laura Simón.