Cephalanthus glabratus. A. Flowering branch. B. Domatia as tufts of hair. C. Axils of the secondary veins showing domatia as tufts of hairs. D. Partial inflorescence. E–G. Functionally female flower details. E. Flower. F. Open flower showing pubescence. G. Bilobed stigma and apical portion of the style. H–J. Male flower. H. Flower. I. Open flower showing pubescence. J. Capitate stigma and apical portion of the style. K. Dorsal view of schizocarp. L. Ventral view of schizocarp. M. Dorsal view of seed with aril. N. Subventral view of seed with aril. Drawn by Laura Simón.

 
 
  Part of: Romero MF, Gonzalez AM, Salas RM (2023) Sylvainia, a new monospecific genus within the subtribe Cephalanthinae (Rubiaceae, Naucleeae). Plant Ecology and Evolution 156(1): 85-111. https://doi.org/10.5091/plecevo.90423