Crataegus vulsa explained

Crataegus vulsa, the Alabama hawthorn, is a rare species of hawthorn from northeastern Alabama and northwestern Georgia.^[1]

References

1. Beadle, C.D. 1903. Crataegus L. In Flora of the Southeastern United States . Edited by J.K. Small. pp. 532–569. in the Biodiversity Heritage Library