In a new report published in Nature Plants, researchers based at more than 50 botanic gardens and living plant collections warn that a patchwork of incompatible, or even absent, data systems is undermining global science and conservation at a critical moment.
They call for a unified and equitable global data system for living collections to transform how the world’s botanic gardens manage and share information. This would enable them to work together as a ‘meta-collection’ to strengthen scientific research and conservation efforts.
I nowadays only identify plants on iNaturalist, so I only use morphological and taxonomic data. And I hardly ID any plants that are cultivated. So I cannot really help you with physiological or cultivation information.
For identification purposes I mostly use POWO (plants of the world online), where there is more information for the plant group I work with. It seems like the information on POWO is more sparse for Cactaceae (here is the entry for the same species you linked to, notably Morawetzia sericata is a synonyme of this species). It’s also very dependent on what plant family you work with. There are more popular ones that have dedicated sites for them, while less popular ones have hardly any information available. Sometimes I’m happy to even find information what distribution a species may have or to find even one herbarium voucher of it. Also, there are some local herbarium databases where they have digitalized entries. But this is of course very localized information :/