Common Gorse (Ulex europaeus). Gorse, Furze, whin. – at Nilgiri Mountains.
Lectin extracted from seeds of this species binds to, is remarkably specific for, and is the standard method for identification of H-substance (absent in the hh antigen system) on human red blood cells. The vast majority of humans express H-substance, which is the basis for the ABO blood group system, but a few rare individuals (“Bombay phenotype”) do not—and a chemical isolated from Ulex europaeus is used to identify these individuals.