Allium ursinum umbel of six to 20 white flowers only, lacking the bulbils produced by some other "Allium" species such as "Allium vineale" (crow garlic) and "Allium oleraceum" (field garlic). It flowers in the British Isles from April to June, starting before deciduous trees leaf in the spring. The flower stem is triangular in cross-section and the leaves are broadly lanceolate similar to those of the lily of the valley ("Convallaria majalis"). It is native to temperate regions of Europe, from Britain east to the Caucasus. It is common in much of the lowland British Isles with the exception of the far
White Main Spring in granite blocks bearing the Hohenzollern coat of arms. The spring bears the name "Fürstenbrunnen" ("Prince's Well"), but is not to be confused with the Upper and Lower Fürstenbrunnen on the Ochsenkopf. By contrast, in 1785 Goethe considered the "Seehausbrunnen" () southeast of the Schneeberg as the source of the Main and wrote: ""the source of the Main, which rises right by the house here and makes the brook look like a tin wash"". The White Main Spring gets its name from the light-coloured, granitic subsoil which gives the river its white appearance. Over the Ochsenkopf runs the European Watershed