Many similarities to : Allium scorodoprasum ssp. rotundum which is a sub-species of Sand Leek (Allium scorodoprasum) but which has a fully globed flower-head but which does not occur naturally in the UK, although can probably be bought at garden centres.

Some similarities to : Wild Leek (Allium ampeloprasum) but that has a larger globe of flowers which may be purple, pale-lilac or whitish with yellow anthers. Also to Chives (Allium schoenoprasum) but that has a smaller and only hemi-spherical globe of paler lilac coloured flowers which open much wider.

No relation to : Round-leaved Crowfoot [a plant with similar name].

More likely to be found growing in a garden than growing in the wild. Grows only in a few places, mostly down south. It totally lacks bulbils, but does have protruding stamens.

The scientific name 'sphaerocephalon' means 'spherical brain' from the Greek σφαιρα sphaira and ενκηεφαλος encephalos, although why botanists should liken it to a brain...