Due to the loss of Pineywood habitat through deforestation and other ecological impacts, Phlox nivalis texensis was federally listed as endangered on September 30, 1991. Very few plants remain in the wild, but the outlook for Texas Trailing Phlox is getting better. Increased environmental awareness has led to the protection of the Pineywoods and the rare species that inhabit them. Also, many universities and environmental groups have undertaken the protection and re-population of endangered species. One of the most noteworthy efforts is taking place at the Stephen F. Austin Arboretum in Nacogdoches, Texas. The SFA Arboretum has set aside a 119 acre easment on which it plans to implement the "three R's" program - rescue, research and reintroduction - on such East Texas endangered species as Texas Trailing Phlox.
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There is not much information about Texas Trailing Phlox's history. Established
by Lundell on April 18, 1942, the subspecies was not very well researched
untill its placement on the endangered list. The reproduction methods
and general nutritional and ecological needs of this plant have yet to
be determined.