John, What is the exact difference. According to Erich Pasche and Antoin Hoog there is very little diference. Look after the "Automn Gold" as the nursery who use to grow this, has lost the totality of the stock. Greetings Lauw > Sternbergia lutea 'Autumn Gold' is not the same as 'Angustifolia' as grown > in the UK. It differs in its foliage and flower shape (at least in all the > stock of it that I have seen).