Some years ago another teacher and I created a web page as part of a course we did in the CFIE of Miranda de Ebro.
After that, I have modified and improved it.
I have used it several times in my classes as a way to work with plants, and I'm going to use it again this year with my 1st of the ESO students.
In the web page students have detailed instructions to create their own online herbarium.
Doing this activity students's not only will learn about plants but also will develop their technological skills.
I leave the link here https://scarabeledu.wixsite.com/plantssirka