|[Note Guidelines] 攝影師備註|
|I found this plant near a very little swamp. It has very tiny flowers around 2 - 3 mms.|
The Redshank (Persicaria maculosa, formerly Polygonum persicaria) is a perennial plant from the Knotweed family Polygonaceae. It is also called Persicaria, Redleg, Lady's-thumb or Spotted Ladysthumb.
There are three varietes known:
Polygonum persicaria var. angustifolium Beckh.
Polygonum persicaria var. persicaria
Polygonum persicaria var. ruderale (Salisb.) Meisn.
synonyms include P. maculata, P. persicaria, P. ruderalis, P. ruderalis, P. vulgaris, P. dubium, P. fusiforme, P. minus and P. puritanorum.
It grows up to 1 m high, and has narrow, lancet-shaped leaves 8-10 cm long. The leaves often have a brown or black spot. The white, pink or red flowers are in dense panicles and flower from early summer to late autumn.
It is native to Europe and Asia, where it can be mistaken for Polygonum minus, but P. minus has narrower leaves, usually less than 1 cm wide, while its ear is slimmer.
It has been introduced to North America and is naturalised in all mainland states, being found along roadsides, riverbanks, and on fallow ground. In the USA, it is very similar to Pennsylvania smartweed, but Redshank has a fringe of hairs at the top of the ocrea, something which Pennsylvania smartweed lacks.
This plant contains persicarin and tannins. In medicine, Redshank is used against diarrhoea and infections. Fresh leaves have been used to staunch bleeding.
The leaves and young shoots may be eaten as a palatable and nutritious leaf vegetable. It is often seen as a weed and rarely cultivated.
A yellow dye can be produced from this plant with alum used as a mordant.
Alex99, matatur, nirmalroberts has marked this note useful
Only registered TrekNature members may rate photo notes.
- [2008-03-06 10:04]
You have shared a very cute picture of the charming twig. I like wonderful framing and composition of the shot, nice delicate lighting and colours, very good sharpness of the main subject and fine smooth BG. My greetings and best wishes.
Interesting looking flower pods Sayat, would like to see them open my friend, till then, cheers...
- [2008-03-06 16:02]
Hi Sayat,very nice pic and much interesting note,my best complimnets for your precious work,thanks for share,LUCIANO
Thanks a lot for sharing this specie of Polygonum. The picture is very nice and representative.
nice close up, greetings Ori