Written by Leila Shultz and produced by SageSTEP, this guide covers the characteristics, distribution, and habitats of 18 sagebrush species. Common Weeds in Puerto Rico and U.S. Virgin Islands. A bilingual guide to the common weeds of Puerto Rico and the U.S. Virgin Islands is now available from the USDA NRCS.It is useful not only in the Caribbean region but also in tropical to warm temperate areas throughout the Americas and beyond.he wetland indicator status ratings from the 2014 National Wetland Plant List (NWPL) are now on our species profile pages and are fully searchable. Redesigned profile pages: Tabs. PLANTS has redesigned its profile pages for species and genera, now presented in tabs instead of across one large page.