Acetosa sagittata és una planta nativa del Sud d'Àfrica, la qual s'ha convertit en una mala herba en Austràlia i Nova Zelanda.
Inicialment descrit com Rumex sagittatus pel botànic suec Carl Peter Thunberg, posteriorment es col·loca dins del gènere Acetosapels botànics australians Lawrie Johnson i Barbara Briggs. El seu nom prové del llatí sagitta, català sageta, això esdevé de la seua morfologia, «forma de sageta».
Planta herbàcia enfiladissa de tiges blanes. Posseeixen fulles amb forma de sageta d'uns de 3 a 6 centímetres de longitud i 2 a 4 centímetres d'ample. A vegades les fenedures de la tija verda poden tenyir-se de color roig. Les petites flors rosades creixen en panícules de fins a 15 centímetres de llarg. Aquestes són seguides per una beina de 3 cares verdoses i de 0,8 a 1 centímetres de diàmetre. La planta creix a partir d'un tubercle, que pot ser de fins a 10 centímetres de llarg. El conjunt de les flors i les llavors de la planta nascudes a l'estiu, poden morir i rebrotar de nou gràcies als tubercles, això passa en les zones més fredes.
Es propaga per llavors o per rebrot dels tubercles. Les llavors suren a l'aigua i, per tant, poden ser transportades lluny de la planta mare. Els tubercles poden ser soltats pels tractors i cada fragment podrà rebrotar; també poden ser difícils de trobar si s'ha fet una l'eliminació de les males herbes a mà.
Acetosa sagittata és una planta nativa del Sud d'Àfrica, la qual s'ha convertit en una mala herba en Austràlia i Nova Zelanda.
Rumex sagittatus, synonym Acetosa sagittata, commonly known as turkey rhubarb or rambling dock or potato vine, is a herbaceous perennial plant native to southern Africa, which has become a weed in Australia and New Zealand.[1]
Rumex sagittatus is a soft-stemmed herbaceous scrambling and climbing plant with prominent triangular arrow-shaped leaves 3–6 cm (1.2–2.4 in) in length and 2–4 cm (0.8–1.6 in) wide. The grooved green stem may be distinctly tinted red at times. The small pinkish flowers grow on panicles up to 15 cm (6 in) long. These are followed by a 3-sided greenish 0.8–1 cm diameter pod. The plant grows from a tuber, which may be up to 10 cm (4 in) long. The plant flowers and sets seed over summer, and may die back to the tuber in colder areas.[1]
Rumex sagittatus was first described in 1794 by Swedish botanist Carl Peter Thunberg. It was later placed in the genus Acetosa by Australian botanists Lawrie Johnson and Barbara Briggs, a placement not accepted by other sources, such as Plants of the World Online. Its specific epithet is derived from the Latin sagittus "arrow", hence "arrow-shaped".[2] The plant is known by various common names including turkey rhubarb, arrowhead vine, potato vine, rambling dock or climbing sorrel.[1]
The plant is native to southern Africa, where it occurs from Malawi and Zambia south to South Africa. It has become naturalised in many parts of Australia near urban areas, from Queensland to eastern Tasmania,[1] and warmer locales in New Zealand.[3]
It spreads by seed or by resprouting from the tuber. The seeds float on water and hence may be conveyed far from the parent plant. Tubers may be broken up by tractors or road graders and each fragment may be able to regrow; they can also be difficult to find with removal of plants by hand.[1] Rumex sagittatus may grow and smother other plants it covers.[4]
The leaves and young stems can be cooked and eaten and are sometimes cultivated as a vegetable in Java.[5]
Rumex sagittatus, synonym Acetosa sagittata, commonly known as turkey rhubarb or rambling dock or potato vine, is a herbaceous perennial plant native to southern Africa, which has become a weed in Australia and New Zealand.
Rumex sagittatus là một loài thực vật có hoa trong họ Rau răm. Loài này được Thunb. miêu tả khoa học đầu tiên.[1]
Rumex sagittatus là một loài thực vật có hoa trong họ Rau răm. Loài này được Thunb. miêu tả khoa học đầu tiên.
