Article: Infraspecific systematic relationships of Sarracenia alata Wood. (Sarraceniaceae) inferred from nuclear ribosomal DNA sequences.

ABSTRACT

Yellow trumpets, Sarracenia alata, is an insectivorous perennial herb that occurs infrequently in acidic hillside seepage bogs and wet savannas from central Texas to southern Alabama. Its overall range is disjunct with the western portion extending from central Texas to western Louisiana and the eastern portion extending from southeastern Louisiana to southern Alabama. Phylogenetic analysis using combined nuclear ribosomal Internally Transcribed Spacer 2 and large ribosomal subunit 26S rRNA gene DNA sequences suggest that the two disjuncts are not phylogenetically distinct from each other. It is speculated that the present range of S. alata is the result ...

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