Wildflowers
Eyebright

Eyebright has small, white flowers with purple veins and yellow centres. It likes short grasslands, from clifftops to heaths, and is one of a number of species and hybrids that are hard to tell apart.

Species information

Statistics

Height: up to 25cm

Conservation status

Common.

When to see

May to September

About

Eyebright is a low-growing, annual plant found in all kinds of short grasslands, from the top of cliffs to windswept heaths, wildflower meadows to downlands. There are about 20 species of Eyebright and around 60 hybrids, which are all very similar and difficult to tell apart from each other. Some of these species, such as Chalk Eyebright and Glandular Eyebright, are rare and classified as Priority Species under the UK Post-2010 Biodiversity Framework. Eyebright is generally semi-parasitic, feeding off the nutrients from the roots of nearby grasses. For this reason, it is a useful plant for keeping vigorous grasses at bay and allowing more delicate wildflowers to thrive.
It flowers between May and September.

How to identify

Eyebright has oval, sharply toothed leaves, and white, violet-like flowers that have purple veins and yellow centres.

Distribution

Widespread.

Habitats

Did you know?

As its common name suggests, Eyebright was used by traditional herbalists for the treatment of different eye disorders. In Greek mythology, the Linnet was the first creature to use Eyebright to clear the sight of its fledglings; it then passed this knowledge on to humans.

Fluorescein disodium salt (insoluble, 50-53% dye content)
(15462696 | 518-47-8)

CAS:	518-47-8
Molecular Formula:	C20H10Na2O5
Molecular Weight:	376.28

Availablility:	In Stock
Downloads:	Product Specification

Fluorescein disodium salt (insoluble, 50-53% dye content) Chemical Structure

15462696-500g

500g

£51.70

Bulk Order

Specification

Certificate of Analysis

Product Detail

	Product Code			15462696
	Product Name			Fluorescein disodium salt (insoluble, 50-53% dye content)
	Categories			Stains & Indicators
	CAS			518-47-8
	Molecular Formula			C20H10Na2O5
	Molecular Weight			376.28
	Storage Details			Ambient
	Harmonised Tariff Code			32129000

Product Specification

	Heavy metals			< 40 mg/kg
	Lead			<10 mg/kg
	AS			<3 mg/kg
	HG			< 1 mg/kg
	Cd			<1 mg/kg
	Loss on Drying			<8%
	Assay			>80%
	Absorption Ratio			1.20-1.70 ((λmax - 15 nm)/(λmax +15 nm))
	Appearance			Red/ dark orange powder
	Wavelenght of max absorption			488.0 - 492.0 nm (in distilled water)

Safety Information

	Pictograms
	Signal word	none
	Hazard statements
	Precautionary statements
Not intended for human use Heraclitus steps in the stream; it is a new stream; the garden remains.