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quarta-feira, 3 de fevereiro de 2010

Antirrhinum majus

Antirrhinum majus

Descrição (from Flora Digital de Portugal e Wikipédia) :


Antirrhinum majus L.
Magnoliophytina (Angiospermae)
EspécieAntirrhinum majusDescritorL.
linkianum (Boiss. et Reut.) Rothm.
Tipo Fisionómico Caméfito2  
SinonimiasAntirrhinum linkianum Boiss. et Reut.
Nome comum
Distribuição Geral
Época de FloraçãoAbril - Julho
DistribuiçãoImagem 1
Imagem 2Imagem3

Antirrhinum majus (Common Snapdragon; often – especially in horticulture – simply "snapdragon") is a species of plants belonging to the genus Antirrhinum. Traditionally it was considered belonging to the Scrophulariaceae, but molecular studies showed its affinity to Plantaginaceae where it is collocated now. 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.


It is a 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 and uses

The species is often planted in gardens for its flowers. Although perennial, it is often treated as an annual plant, particularly in colder areas where they 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.

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.

In the laboratory it is a model organism, for example containing the gene DEFICIENS which provides the letter "D" in the acronym MADS-box for a family of genes which are important in plant development.

Locais de registo na Praia de Quiaios e na Serra da Boaviagem:


Extratos do Género Antirrhinum na "Flora Iberica"

Distribuição em Portugal: Trás-os-Montes até ao Alentejo; mais frequente na zona do litoral

Utilização medicinal e fitoterapéutica:

Alguma fotografias da Praia de Quiaios:

Links e Bibliografia:


1 traditionally included in the Scrophulariaceae family

2 Caméfito: planta perene cujas gemas de renovo se situam a menos de 25 cm da superfície do solo;

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