Tables and diagrams
Secretion within the areole
Secretory glochids
The left side compares structures in Brasiliopuntia brasiliensis and Nopalea cochenillifera, accepted in the atlas as Opuntia cochenillifera. The right side distinguishes the expanded, vascularised base, unlignified middle part and tip. The drop at the tip indicates secreted nectar. [Silva et al. 2020]
The plate concerns specialised structures in two species studied. It does not show the structure of all glochids or ordinary spines. It is an educational reconstruction, not a microscopic image from a publication.
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