Persicaria maculosa - Redshank

Redshank, Persicaria maculosa

Taxonomy

Phylum: Anthophyta

Class: Equisetopsida

Order: Caryophyllales

Family: Polygonaceae

The beauty of some wildflowers, of which Redshank is a prime example, is overlooked by all but those who stoop to study them close up.

Identification

As in this example, there are usually dark blotches, often shaped rather like arrowheads, on the leaves of this annual plant. The stems are sometimes, but far from always, flushed with red - hence the common name.

Redshank, Persicaria maculosa, closeup of flowers

Growing in tightly-packed elongated ellipsoidal groups, the tiny flowers of Persicaria maculosa are pale pink, but while in bud they are a much deeper pink. The perianth (the corolla of infertile structures around the reproductive parts) of each tiny pink flower consists of four or five petal-like lobes that are fused near to the base. Within the perianth are six white stamens, two fused carpels and two styles.

Distribution

Common throughout Britain and Ireland, Redshank occurs throughout temperate parts of Europe and Asia. It is an introduced species in North America.

Habitat

You will find plenty of Redshank in marshy areas, although it is also quite commonly seen in dryareas where the ground has been disturbed - building sites, for example.

Redshank, Persicaria maculosa, leaf

Blooming Times

In Britain and Ireland Redshank blooms from June through to October.

Uses

Generally considered a nuisance weed of cultivated land, Redshank has been used as a source of a yellowish dye. The leaves and young shoots are cooked eaten as leaf vegetables in some countries. (We strongly advise against eating or using as medicines any plants without first obtaining qualified professional advice.)

Etymology

Persicaria, the generic name, relates the shape of leaves of this group of plants to those of a peach tree.

The specific epithet maculosa means spotted; it refers to the dark blotches on leaves of Redshank.

Redshank, Persicaria maculosa, stem node

It is from the reddish colour of the stems, most particularly immediately above branching nodes, that Persicaria maculosa gets its common name Redshank.

Similar Species

Amphibious Bistort Persicaria amphibia has similar flowers; its long-stalked leaves are a clear distinguishing feature; the leaves of Persicaria maculosa are almost stalkless..:

The pictures of Persicaria maculosa shown on this page were taken in West Wales during July and August.


Volume 1

We hope that you have found this information helpful. If so we are sure you would find our books Wonderful Wildflowers of Wales, vols 1 to 4, by Sue Parker and Pat O'Reilly very useful too. Buy copies here...

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