This section is from the book "British Wild Flowers - In Their Natural Haunts Vol2-4", by A. R. Horwood. Also available from Amazon: A British Wild Flowers In Their Natural Haunts.
I. Purple Dead Nettle (Lamium purpureum, L.). 2. White Dead Nettle (Lamium album, L.). 3. All good (Goosefoot) (Chenopodium album, L.). 4. Good King Henry (Chenopodium Bomus Henricus, L.). 5. Knotgrass (Polygonum aviculare, L.). 6. Dairy Maid's Dock (Rumex oblusifolius, L.). 7. Wall Barley (Hordeum murinum, L.).
Lamium, Pliny, is the Latin name for the Dead Nettle, and the second Latin name refers to the purple colour of the petals.
This common plant is known by the names of Red or Sweet Archangel, Badman's Posies, Black Man's Posies, Day Nettle, Dead Nettle, Red Dead Nettle, Deaf Nettle, Dee Nettle, Dog Nettle, French Nettle, Nettle, Purple Dead-nettle, Rabbit-meat, Tormentil. Dead Nettle, Day Nettle, are meant to indicate its harmless character.
A writer says: "It is far from being foetid as is the case with many others, so that by some for distinction this plant is termed the Sweet Archangel". In Sweden it has been boiled as a pot herb.
Essential Specific Characters:258. Lamium purpureum, L. - Stem suberect, leaves stalked, cordate, crenate, flowers purple, corolla-tube straight, with hairs exceeding the calyx-teeth, lower lip with obcordate lobe.