Green Alkanet - Pentaglottis sempervirens
A bristly plant usually of 30 to 60 cm in height. Stems branched, stem leaves unstalked. Flowers bright blue with a white scaly throat 8 to 10 mm in small long-stalked leafy cymes.
Damp or shady habitats, woodland margins, hedgebanks and cultivated land.
April to July.
Perennial.
Frequent and widespread throughout most of Britain except the extreme north.
Now common in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in just 50 of the 617 tetrads.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
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Species profile
- Common names
- Green Alkanet
- Species group:
- flowering plant
- Kingdom:
- Plantae
- Order:
- Family:
- Boraginaceae
- Records on NatureSpot:
- 330
- First record:
- 19/05/2007 (Calow, Graham)
- Last record:
- 13/04/2026 (Gaten, Ted)
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% of records within its species group
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Agromyza abiens/myosotidis/lithospermi agg.
The larvae of the Agromyzid flies Agromyza abiens, Agromyza myosotidis and Agromyza lithospermi produce identical mines on the leaves of several food plants in the Boraginaeceae family, such as Borage, Comfrey and Green Alkanet plus a number of other host plants. The initial narrow gallery contains frass in a double line, which it then expands to form a blotch mine. Several larvae may occupy a leaf to form a large blotch. Because the mines on these plants cannot be reliably separated to species level we treat them as an aggregate.













