FANDOM


Cardo pendiente

Clasificación científica
Reino:Plantae
División: Magnoliophyta
Clase: Magnoliopsida
Orden: Asterales
Familia: Asteraceae
Género:Carduus
Especie: C. nutans
Nombre binomial
Carduus nutans L.,


El Cardo pendiente, Carduus nutans L. var. macrocephalus (Desf.) Fiori et Beguin, hay autores que la sinonimizan con Carduus thoermeri.

The Musk thistle (Carduus nutans) is a member of the daisy family Asteraceae. It is a biennial herb with showy red-purple flowers and sharply spiny stems and leaves. It is native to much of Europe and Asia except for the far north.

Mature plants range in height from 1-1.5 m tall and have multi-branched stems. The leaves are dark green, coarsely bipinnately lobed, with a smooth, waxy surface and sharp yellow-brown to whitish spines at the tips of the lobes. The large globose flower heads, containing hundreds of tiny individual flowers, are 3-5 cm (rarely to 7 cm) diameter and occur at the tips of stems. The flower heads commonly droop to a 90° to 120° angle from the stem when mature, hence its alternate name of "Nodding thistle". Each plant may produce thousands of straw-colored seeds adorned with plume-like bristles.

Musk thistle is usually a biennial, requiring 2 years to complete a reproductive cycle. However, it may germinate and flower in a single year in warmer climates. Seedlings may emerge at any time from spring to late summer and develop a rosette of large leaves 30-60 cm long. Plants overwinter in the rosette stage, sending up a multi-branched flowering stem in mid spring of their second year.

The number of flowerheads per plant is site-dependent and ranges from about 20-50 on good sites and 1-20 on poor sites. Flowering occurs from late spring to late summer, and seed dissemination occurs approximately one month after the flowers form. A single flower head may produce 1,200 seeds and a single plant up to 120,000 seeds, which are wind dispersed. The seeds may remain viable in the soil for over ten years, making it a difficult plant to control.

Musk thistle grows from sea level to an elevation of about 2,500 m in neutral to acidic soils. It typically grows on open disturbed soil or heavily grazed land in areas such as meadows, arable land, roadsides, building sites and similar. It spreads rapidly in areas subjected to frequent natural disturbance events such as landslides and flooding, but does not grow well in excessively wet, dry or shady conditions.

Cultivation

Musk thistle was introduced into the eastern North America in the early 1800s and has a long history there as an invasive species. It has been declared a noxious weed in many U.S. states and Canadian provinces. Most farmers spend many hours attempting to rid them from farm ground, mostly pastures. Left unchecked, it will quickly take over a field.

¡Interferencia de bloqueo de anuncios detectada!


Wikia es un sitio libre de uso que hace dinero de la publicidad. Contamos con una experiencia modificada para los visitantes que utilizan el bloqueo de anuncios

Wikia no es accesible si se han hecho aún más modificaciones. Si se quita el bloqueador de anuncios personalizado, la página cargará como se esperaba.

También en FANDOM

Wiki al azar