Lilium bulbiferum is a herbaceous European lily with underground bulbs, belonging to the Liliaceae. It reaches an average height of 20–90 centimetres (7.9–35.4 in), with bulbs that can reach about 1.5 centimetres (0.59 in) of diameter. L. bulbiferum has two varieties, L. bulbiferum var. croceum and L. bulbiferum var. bulbiferum; only the latter always produces secondary aerial bulbs.Photograph: Uoaei1