Au Printemps, dam of Breeders' Cup Juvenile (gr. I) winner Success Express and Canadian champion Charlie Barley, was euthanized several days after foaling a Monarchos colt May 7 at Frank Penn Jr.'s Pennbrook Farm near Lexington. The 26-year-old Canadian stakes winner experienced difficulties with mobility in her hind legs following the delivery. Her newborn foal is on a nurse mare. Au Printemps, whose third dam was the great Gallorette, was owned by David Bowman and Carl Chan, who raced her in a partnership with others. French for "in the spring," Au Printemps started her broodmare career in stunning fashion: Success Express was her first foal, and Charlie Barley her second.Success Express, by Hold Your Peace, won the 1987 Juvenile and earned a career total of $835,359. He went on to become a successful sire in Australia.Charlie Barley, a son of Affirmed, was Canada's champion grass male in 1989. He set course records in two of his eight stakes wins and earned $922,943 in his career.Au Printemps, who produced eight winners from 14 named foals, also was the dam of grade I winner Greenwood Lake. A son of Meadowlake, Greenwood Lake scored his big win in the 1999 Champagne Stakes (gr. I).One of Au Printemps' daughters, Bittersweet Hour, is both the dam of a stakes winner and granddam of one. Bowman and Chan keep Greenwood Lake's 7-year-old full sister, Lac Du Printemps, at Pennbrook. Lac Du Printemps produced a Monarchos colt this year and was bred to More Than Ready.Bred in Maryland by Livestock Consultants, Au Printemps (Dancing Champ--Lorgnette, by High Hat) won seven of 30 races and earned $124,383. She took three stakes, including the 1982 B. C. Oaks at Exhibition Park. Au Printemps, who was based her entire career as a broodmare at Pennbrook, was buried at the farm.