A putative hybrid of unknown parentage was discovered in Walker County, Texas. Taxonomic features resemble both Thelypteris kunthii and Thelypteris ovata var. lindheimeri indicating hybridity. Spores of the putative hybrid examined by microscopy appeared malformed and were sterile with 0% germination. Guard cell measurements were intermediate to the presumed diploid and tetraploid parental species suggesting that the hybrid is triploid. Qualitative and quantitative phenetic characters examined were an array of parental and intermediate characters, suggesting that it had resulted from a cross between Thelypteris kunthii and Thelypteris ovata var. lindheimeri.