A working list of all plant species

Since 2013 Website (not collaborative) English

World

Higher plants (Tracheophyta)

http://www.theplantlist.org/

A non-profit database providing information on wild California plants

Collaborative website English

California (state - United States of America)

Higher plants (Tracheophyta), Mosses (Bryophyta)

https://www.calflora.org/

2007 scientific paper, free PDF on the internet Italian

Vesuvius (volcano)

Cerambycidae

Browse 1,421,000 global plant names, 199,900 detailed descriptions, and 374,100 images

Website (not collaborative) English

World

Flora / Botany (Plantae)

https://powo.science.kew.org/