a The probract of C. grandiflora is fleshy and has a keel. The abaxial side bears many extranuptial nectaries. The structure pointing to the lower left of the picture is the tendril b The probract of C. trilobata (sampled as N. Holstein & P. Sebastian 9) is spoon-shaped, papery, and without a keel.

  Part of: Holstein N (2015) Monograph of Coccinia (Cucurbitaceae). PhytoKeys 54: 1-166. https://doi.org/10.3897/phytokeys.54.3285