Phlox nivalis is a species of flowering plant in the Polemoniaceae family with the common names trailing phlox and pineland phlox. It is native to the southeastern United States, Texas, Michigan, and Utah.
One subspecies of this plant, Phlox nivalis subsp. texensis, the Texas trailing phlox or Texan phlox, is a rare plant federally listed as an endangered species of the United States. The subspecies is endemic to Texas, where there are populations in three counties. At one time, the subspecies was thought to be extinct. It was rediscovered in 1972.
Taxonomy In 1827 Phlox nivalis was named by Robert Sweet, though he attributed the name to George Loddiges. It is part of the Phlox genus which is classified in the Polemoniaceae family and has two accepted subspecies.
Phlox nivalis subsp. nivalis – Native to the southeastern US, Michigan, and Utah Phlox nivalis subsp. texensis – Native to Texas
Phlox nivalis has synonyms of the species or one of its two subspecies.
Table of Synonyms Name Year Rank Synonym of: Notes Phlox hentzii 1834 species subsp. nivalis = het. Phlox nivalis subsp. hentzii 1956 subspecies subsp. nivalis = het. Phlox nivalis var. hentzii 2012 variety subsp. nivalis = het. Phlox nivalis f. roseiflora 1949 form subsp. nivalis = het. Phlox nivalis f. rubella 1973 form subsp. nivalis = het. Phlox nivalis var. texensis 1998 variety subsp. texensis ≡ hom. Phlox subulata subvar. hentzii 1907 subvariety subsp. nivalis = het. Phlox subulata f. hentzii 1894 form subsp. nivalis = het. Phlox subulata subsp. nivalis 1907 subspecies P. nivalis ≡ hom. Phlox subulata f. nivalis 1894 form P. nivalis ≡ hom. Phlox texensis 1945 species subsp. texensis ≡ hom. Notes: ≡ homotypic synonym; = heterotypic synonym
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