Lilium
There are many types and cross-breeds of Lily, but the most commonly used by florists are the Asiatic, Oriental, Longiflorum and Trumpetor (or Christmas Lily). Lilies are grown from bulbs all year around, although they also naturally flower in summer in colder climates, and are one of the most popular types of flower. Orientals, Longiflorums and Trumpetors are all heavily scented and larger bloomed, whilst Asiatics are unscented. Each tall stem will have many glossy leaves and two or more buds, that open up to reveal five pointed petals and stamens in the centre (the furry stamen tips should be removed as soon as possible to prevent yellowing or damage).
Orientals are available in white, yellow or shades of pink, Longiflorums are pale or white in colour and Trumpetors, true to their name, are a trumpet-shaped white. Asiatics come in a variety of bright and pale shades, with orange, dark red, pale pink, yellow and white being the most common.
Lilies stand for tenderness or purity, despite the fact they are poisonous. Because of the wide variety of colours and sizes, they suit with most other flowers, and are commonly arranged along with long-stemmed roses as a romantic gift.