Lilium

Lilium bulbiferum - Orange lily
Lilium canadense - Canada lily
Lilium candidum - Madonna lily
Lilium humboldtii - Humboldt's lily
Lilium lancifolium - Tiger lily

and about 100 more species

The showy and large flowered plants of the genus Lilium are the true lily plants. They are placed in the lily family, the Liliaceae.

Lilies are native to the northern temperate regions. Their range in the Old World extends across much of Europe, the north Mediterranean, across most of Asia to Japan, south to the Nilgiri mountains in India, and south to the Philippines. In the New World they extend from southern Canada through much of the United States.

The majority of species form naked or tunic-less underground bulbs from which they overwinter. In some North American species the base of the bulb develops into rhizomes, on which numerous small bulbs are found. Some species develop stolons.

The large showy flowers are six-petalled, often fragrant, and come in a range of colours ranging through whites, yellows and reds, sometimes with other markings.

The plants are summer flowering, and they have a winter resting period.
Most species are deciduous, but Lilium candidum bears a basal rosette of leaves for much of the year. Flowers are formed at the top of a single erect stem, with leaves being borne at intervals up the stem.

Lilies are commonly adapted to either woodland habitats, often montane, or sometimes to grassland habitats. A few can survive in marshland and a single one is known to live as an epiphyte (L. arboricola).
Numerous cultivated forms are now grown for gardens.

Liliums are propagated in four ways;