[1]
Rakotonandrasana, S.R., Oskolski, A.A., Tilney, P.M., Kotina, E.L. and van Wyk, B.-E. 2017.

The rediscovery of Billburttia vaginoides, with notes on the morphology, anatomy, traditional uses and conservation status of the genus Billburttia (Apieae, Apiaceae)

. Phytotaxa. 321, 3 (Sep. 2017), 265–276. DOI:https://doi.org/10.11646/phytotaxa.321.3.4.