Augustus Barthélémy Langlois was born in Rhone, France on April 24, 1832.  He came to the United States in 1855 and settled in Cincinnati, where he completed his studies at the College of Mount St. Mary of the West.  He was ordained a Roman Catholic priest on June 11, 1857, and his first position as a priest was at Point-a-la-Hache, Plaquemine Parish, Louisiana.  After 35 years Langlois was moved to St. Martinville.  At both locations he collected many fungus, lichen, and plant specimens.  Langlois became well-known as a mycologist and discovered several new fungal species. In fact his scientific studies were so well known by the time of his death that a notice appeared in the Botanical Gazette. The New Orleans Daily Picayune published a memorial,  "Father Langlois Returns to God."  Langlois is buried in a crypt beneath an Epistle side of the altar of St. Martin de Tours Church, where he was pastor at the time of his death. Several reports that his death occurred in 1901 are disputed by church records, which indicate that his death occurred in 1900.  Langlois's collections came primarily from three southern Louisiana  sites, the extreme southeastern Mississippi River delta near Point-a-la-Hache, St. Tammany Parish near the a retreat site he frequently visited, and a cluster in St.Martin and surrounding parishes.  Langlois was associated with several prominent mycologists, including Job Bicknell Ellis and Benjamin Matlock Everhart.  A number of fungi native to Louisiana were sent by Langlois for study by Ellis and Everhart. They described some of Langlois' specimens. Langlois published several mycological papers and described a few fungi on his own, including Volutella ellisii, named for his long-time collaborator.  --T. L. LeBlanc