As of March 2020[update], sources differ as to the identity of the other, which may be either Scilla forbesii (syn.

[2] Like its parents, Scilla × allenii grows from bulbs and flowers freely in early spring.

The flowers are various shades of blue from lilac to violet and are intermediate in size between those of the parents, up to 2.5 cm in diameter when fully open.

'Frà Angelico', with pale blue flowers, has gained the Royal Horticultural Society's Award of Garden Merit[2] (confirmed 2017).

[3] As of March 2020[update], the World Checklist of Selected Plant Families regards Chionodoxa as part of Scilla,[1] in which case the hybrid genus name is not needed.