Notholirion bulbiferum is a bulbous member of the lily family (Liliaceae) from the Himalayas that flowers in April to May. Individual bulbs produce basal leaves through autumn and winter, then a single flowering event before the original bulb dies back after setting offsets. The bulb is protected by a tunic and propagates by those offsets rather than repeated flowering by the parent bulb.

Notholirion bulbiferum is a Himalayan bulb in the lily family that flowers April to May and sets offsets before the parent bulb dies.

Notholirion is a small Asian genus of bulbous plants in the lily family, Liliaceae. It is closely related to Lilium, but each individual flowers only once, and then dies after producing offsets.

Notholirion bulbiferum

Notholirion campanulatum is a bulbous perennial in the lily family (Liliaceae) that flowers in April to May. It originates from the Himalayas and suits open, well-drained sites. The plant prefers full sun to partial shade and fertile, neutral to slightly acidic soil that remains moist but drains freely. Use it where spring bulbs and low alpine plants are visible in a gravelly or stony setting.

Bell-flowered lily (Notholirion campanulatum) flowers in April to May and prefers full sun to partial shade in well-drained, fertile neutral to slightly.

Notholirion campanulatum

Bell-flowered lily | Notholirion campanulatum

Notholirion hyacinthinum is a bulbous member of the lily family that produces a single flowering event before the parent bulb dies back and is replaced by offsets. It is native to the Himalayas and closely related to Lilium. The bulb is covered by a tunic and produces basal leaves through autumn and winter. Flowering occurs in April to May.

Notholirion hyacinthinum is a Himalayan bulb that flowers in April to May and produces offsets after flowering.

Notholirion hyacinthinum

Notholirion macrophyllum is a bulbous perennial in the lily family valued for its large, basal foliage and spring bulb habit. It originates from the Himalayas and parts of China. Plants flower in April to May and prefer sites with full sun or partial shade. Grow in fertile, well-drained soil that is neutral to slightly acidic and kept moist but never waterlogged.

Large-leaved false lily (Notholirion macrophyllum) is a bulbous perennial from the Himalayas and China that flowers in April to May.

https://en.wikipedia.org/wiki/Notholirion_macrophyllum

Notholirion macrophyllum

Large-leaved false lily | Notholirion macrophyllum

Notholirion thomsonianum is a bulbous perennial in the lily family that produces scented flowers. Native to the western Himalaya and Afghanistan, it occupies exposed mountain sites in its range. In cultivation it favours well-drained sandy or loamy soil of neutral to slightly acidic reaction and a sheltered, south-facing position. The plant flowers in April to May and is suited to rock and alpine garden situations and mixed borders.

Thomson's lily (Notholirion thomsonianum) is a bulbous perennial with scented flowers in April to May, ideal for rock and alpine gardens.