Antirrhinum majus (Common snapdragon)

Antirrhinum majus (common snapdragon; often - especially in horticulture - simply "snapdragon") is a species of flowering plant belonging to the genus Antirrhinum. The plant was placed in the Plantaginaceae family following a revision its prior classical family, Scrophulariaceae. It is native to the Mediterranean region, from Morocco and Portugal north to southern France, and east to Turkey and Syria. The common name "snapdragon", originates from the flowers' reaction to having their throats squeezed, which causes the "mouth" of the flower to snap open like a dragon's mouth.

Description
It is an herbaceous perennial plant, growing to 0.5–1 m tall, rarely up to 2 m. The leaves are spirally arranged, broadly lanceolate, 1–7 cm long and 2-2.5 cm broad. The flowers are produced on a tall spike, each flower is 3.5-4.5 cm long, zygomorphic, with two 'lips' closing the corolla tube; wild plants have pink to purple flowers, often with yellow lips. The fruit is an ovoid capsule 10–14 mm diameter, containing numerous small seeds.  The plants are pollinated by bumblebees, and the flowers close over the insects when they enter and deposit pollen on their bodies.

Cultivation
Antirrhinum majus to some extent can survive frost as well as higher temperature, but does best at temperatures around 17–25 °C. Nighttime temperatures around 15–17 °C encourage growth in both the apical meristem and stem of A. majus. The species is able to grow well from seeds, flowering quickly in 3 to 4 months. It is also able to be grown through cutting.

Though perennial, the species is often cultivated as a biennial or annual plant, particularly in colder areas where it may not survive the winter. Numerous cultivars are available, including plants with lavender, orange, pink, yellow, or white flowers, and also plants with peloric flowers, where the normal flowering spike is topped with a single large, symmetrical flower. The cultivars ’Floral Showers Deep Bronze’ and ‘Montego Pink’ have gained the Royal Horticultural Society’s Award of Garden Merit

The trailing (creeping) variety is often referred to as A. majus pendula (syn. A. pendula, A. repens).

It often escapes from cultivation, and naturalised populations occur widely in Europe north of the native range, and elsewhere in temperate regions of the world.
en.wikipedia.org

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