Robuta

https://bellatlas.umn.edu/taxa/index.php?tid=243303&taxauthid=1&clid=0 Minnesota Biodiversity Atlas - Coelosphaeria calyculus minnesota biodiversity atlas https://eflora.sydney.edu.au/glossary/calyculus Calyculus - Glossary - eFlora: Vascular Plants of the Sydney Region - The University of Sydney vascular plants of the sydney region glossary university