There was a request to track down a number of Snowdrop cultivars by a member of the forum; I can help.
I have one of them in my garden, it originates from the original stock that was dug up at Howick Hall in Northumberland and handed to me personally. It was subsequently found to be distinct and was given the name Galanthus nivalis 'Dame Margot Fonteyn' after consultation with Lord Howick and the brother of Dame Margot Fonteyn. Stocks of it are available should anyone be interested, and it is about in a number of gardens in England and Scotland. The Nomenclatural Standard that I prepared and sent to Wisley contains the following information:
Description
Leaves applanate, glaucescent to green, 1 cm x up to 18cm tall with distinct median stripe, scape pale green, erect up to 15cm; pedicel 60-90mm, spathe up to 90mm, two scapes produced from established bulbs. Outer perianth segments 35 x 8-12 mm, inner segments 15 x 6-8mm, with an apical green v mark at apex and notch at sinus. Pale green marks from apex to base of inner segments with two diffuse but distinct yellow-green patches, ovary ovoid, pale mid-green. Flowering mid-March, heavily scented.
This year because of the mild winter it is in full flower mid February.
Mike Hirst