It was originally described by H. H. Chapman (1922), who named it after its discoverer, V. H. Sonderegger, a state forester of Louisiana.

Because both parental trees usually produce cones at the same time of year, no phenological barrier exists, thus the two freely cross.

Because no grass stage exists for this hybrid, it has significant height growth during the first year.

Thus, it is easily detected in uniform plantings of longleaf pine.

[2] Differences in wood properties are insignificant when compared to random samples of the two parent species.