I just heard about this new website entitled, "ELPT: Early Land Plants Today - Uniting Taxonomy, Nomenclature, & Geography". It is a web resource devoted to information on liverworts (Marchantiophyta), one of the three groups of bryophytes.
This webite has a really extensive literature list that includes 12,000 references about liverworts. There are also links to a few taxon pages with sketches of the species. Additionally there is an extensive list of liverwort checklists. A checklist has all the species in a particular group of interest, plant or animal, that occur in a specific region or area of the world. The area a particular checklist covers can be as small as a local park or as extensive as an entire country. They are a good resource for discovering what species occur in your neck of the woods.
How to calculate trigonometry functions
5 hours ago in Doc Madhattan