Listed and Sensitive Plants along the Buffalo River. Arkansas Natural Heritage Commission. Tools for Teaching
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Global rankings are assigned by a consensus of international conservation organizations to designate the range-wide rarity of a species. The rankings range from G-1 (extremely rare) to G-5(very common and secure globally), with additional rankings tied to historical data and possible extinction.
State ranks are assigned in a similar manner to global rankings, with designations ranging from S-1 to S-5, but consider only factors within the boundaries of Arkansas. For example, a species that is endemic to Arkansas (found nowhere else in the world) would have the same global and state ranks, whereas a species that may be common in the western U.S. but only known from a few occurrences in Arkansas will have global and state ranks that differ.
Jim Corbin South Carolina Dept. of Agriculture developed a marking system for ginseng
The Chestnut blight (Cryphonectriaparasitica) was introduced on the East coast by Chinese chestnuts.
A pink carnation