Talking about Lily (Lilium 'Paraguay'), kreemoweet wrote:

This variety has the potential to become quite large. Mine were well over 7 feet tall this year, with thick stems that required no staking, with strong fragrance. I just finished digging the bulbs, which were quite large, one being over 6 inches diameter. The bulbs were bright yellow, with no hint of red/purple on them.

Talking about Lily (Lilium 'Ariadne'), HoodLily wrote:

This lily is a parent to "Midsummer's Eve"

Talking about Tiger Lily (Lilium lancifolium), ILPARW wrote:

This Tiger Lily still has an older scientific name being used by many of Lilium tigrinum and it is native to northeast Asia. It is an easy-to-grow and robust lily that is resistant to any lily diseases. It has unbranched stems that can be green or dark purple with white hairs bearing alternate lance-shaped 3 to 7 inch long leaves that are smooth with conspicuous parallel veins. Its unscented orange, spotted flowers are drooping and about 4 to 5 inches wide and do not have a green star-like throat as the similar Turk's-Cap Lily of the eastern US and southeast Canada. The Tiger Lily also bears purplish-black bulblets in the axils of its upper leaves that can emit roots while they are still on the plant. It is somewhat commonly used in gardens and it can escape locally from cultivation. Its flowers bloom for several days and are good cut flowers that can last to about 2 weeks in a vase of water.

Talking about Lily (Lilium sulphureum), Lucius93 wrote:

An amazing trumpet lily that is widespread in southwestern China and northern Myanmar (where it was first described). Since it grows in a large geographical area, morphological variations are normal. The flower is usually white with a sulfur yellow center, but in rare cases the entire flower has a yellow color. The outer part of the flower is greenish with varying amounts of pink or purple. The flowers can be over 20 cm long. The smell is strong and pleasant, but prolonged exposure can cause headaches (especially indoors). This species produces bulbils in the leaf axils and the first flowers are possible 2 or 3 years after their planting.
In cultivation, this lily requires excellent drainage, and it is necessary to protect the bulbs from excessive moisture during the winter. In favorable conditions, it can reach a height of over 2.5 meters! It is a late riser, not usually appearing above ground until mid-May, or even June, but then grows very rapidly to flower in late July or August (depending on your climate).

Talking about Lily (Lilium canadense), ILPARW wrote:

This species is native to Ontario to Nova Scotia down to northern Georgia & Alabama and west to Indiana in moist meadows or woodland edges. Its flowers are nodding (hanging downward), are red to orange to yellow with dark red or purple spots in the flower throat, blooming in or near June. The flowers are not fragrant. The lance-like leaves whorl around the stems. It bears seeds in late summer that can be sowed in the ground to sprout the next year or the bulb can be divided when the plant is dormant. I've only seen it once and that was at the Mount Cuba Center in northern Delaware that specializes in native plants of the Piedmont Region.