Rosas-Reinhold I., Piñeyro-Nelson A., Rosas U., Arias S., Blurring the Boundaries between a Branch and a Flower — Potential Developmental Venues in Cactaceae, Plants, 2021, 10(6):1134, doi: 10.3390/plants10061134
The account analyses the origin and development of cactus floral structures. It discusses the pericarpel and different interpretations of stem tissue contributions to flower organisation.