Alisma plantago-aquatica

Alisma ?lanceolatum

Descrição (from Wikipédia e Flora Digital de Portugal):

The Common Water-plantain (Alisma plantago-aquatica), also known as Mad-dog weed, is a perennial flowering plant native to most of the Northern Hemisphere, in Europe, northern Asia, and North America. It is found on mud or in fresh waters.

The word alisma is said to be a word of Celtic origin meaning "water", a reference to the habitat in which it grows. Early botanists named it after the Plantago because of the similarity of their leaves.

It is a hairless plant that grows in shallow water, consists of a fibrous root, several basal long stemmed leaves 15-30 cm long, and a triangular stem up to 1 m tall.

It has branched inflorescence bearing numerous small flowers, 1cm across, with three round or slightly jagged, white or pale purple, petals. The flowers open in the afternoon. There are 3 blunt green sepals, and 6 stamens per flower. The carpels often exist as a flat single whorle. It flowers from June until August.

The word alisma is said to be a word of Celtic origin meaning "water", a reference to the habitat in which it grows. Early botanists named it after the Plantago because of the similarity of their leaves.
Similar Species

Narrow leaved water plantain Alisma lanceolatum, differs only in that the leaf tips are acuminate and shape is narrow lanceolate.

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

Identificação:

" Coutinho (1939/2ed) - Flora de Portugal "

O Género Alisma na "Flora Iberica"

Distribuição em Portugal: Maior parte da Europa e todo o Portugal


Utilização medicinal e fitoterapéutica:

The dried leaves of the water plantain can be used as both a diuretic and a diaphoretic. They have been used to help treat renal calculus, cystitis, dysentery and epilepsy. The roots have formerly been used to cure hydrophobia, and have a reputation in America of curing rattlesnake bites.

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Links e Bibliografia:

Albizia lophanta

Albizia lophanta

Descrição:

Encontramos a espécie no Cabo Mondego nas falésias, perto do Farol. Primeiro pensamos que a espécie seria Acacia dealbata porque são parecidas na morfologia das folhas. No entanto, a flor mostrou que a espécie apresentada será uma espécie do género Albizia, provavelmente Albizia lophanta. Esta espécie está na lista das invasoras em Portugal.

From Wikipédia:

Albizia is a genus of about 150 species of mostly fast-growing subtropical and tropical trees and shrubs in the Subfamily Mimosoideae of the legume family, Fabaceae. The genus is pantropical, occurring in Asia, Africa, Madagascar, Central, South, and southern North America and Australia, but mostly in the Old World tropics. Some species are considered weedy.

They are commonly called silk trees or sirises. Peculiarly, the obsolete form of spelling the scientific name - with double 'z' - has stuck, so that another commonly used term is albizzias (though the form albizias is also found, particularly in species that are not widely known under a common name). The scientific name refers to the Italian nobleman Filippo degli Albizzi, who in the mid-18th century introduced siris to Europe.

These are usually small trees or shrubs with a short lifespan - though the famous Samán del Guère near Maracay in Venezuela is a huge Albizia saman specimen and several hundred years old. The leaves are pinnately or bipinnately compound. Their small flowers are in bundles, with showy stamens much longer than the petals. Confusingly, some species are given the name "mimosa" which correctly belongs to species in the related genus Mimosa. Unlike those of Mimosa, Albizia flowers have much more than 10 stamens. Albizia can also be told apart from another large related genus, Acacia, since its flowers have their stamens joined at the base whereas in Acacia stamens are free (separated).

Persian Silk Tree or Pink Siris (Albizia julibrissin) extends well north into temperate regions in East Asia and is by far the cold-hardiest species. It tolerates temperatures down to about -22°F (-30°C), provided it gets adequate summer heat to ripen the shoots. In North America it is commonly grown as an ornamental tree, but has become naturalized in several US States, and is regarded as an invasive species.

Albizia species are used as food plants by the larvae of some moths of the genus Endoclita inclulding E. damor, E. malabaricus and E. sericeus.

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

Distribuição em Portugal: Espécie ornamental e invasora em Portugal



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