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Tag Archives: Vicia species

Smooth tare

01 Sunday Jun 2025

Posted by sconzani in wildflowers

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Tags

British wildflowers, Ervum tetraspermum, Fabaceae, Pea family, Smooth tare, Vicia species, Vicia tetrasperma

Smooth tare (Vicia tetrasperma) (also known as Ervum tetraspermum) is a plant belonging to the pea (or bean or legume) family, the Fabaceae (or Leguminosae); so many names for one small plant.

As it grows in grassland and along road verges, it can often get lost amongst the larger, more dominant plant species – that’s certainly my excuse for having overlooked this lovely wildflower in previous years. But it is definitely worth searching for, if only to admire the ethereal beauty of its fine, delicate flowers. These are very pale, white with the merest hint of purple, with fine purple streaking on their upper petals. And now that Smooth tare has come to my attention, I am finding it in many of my favourite walking locations.

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The Brimstone, the vetch and the ants

20 Friday May 2022

Posted by sconzani in flowers, insects, wildflowers

≈ 2 Comments

Tags

ants, ants nectaring on EFNs, Brimstone, Common vetch, EFNs, extrafloral nectaries, Grass vetchling, nectar sources on plants, Vetches, Vicia species

Two for the price of one today: a lovely female Brimstone butterfly, which I was really happy to catch feeding on Common vetch.

220520 vetch and ants (1)

But, lurking beneath the flower, you may be able to spot a small creature. It’s an ant and, if you’ve ever looked closely at the flowers of any of the vetch family (Common, Bush, Tufted, and the vetchlings), you may have noticed they all prove attractive to ants.

220520 vetch and ants (2)

I’ve only recently discovered the reason for this: these plants all have extrafloral nectaries (EFNs), tiny glands on the stems and other areas of a plant, where nectar is secreted. The vetches aren’t the only plants to have these EFNs – according to a report on the University of Florida website (and there are many other scientific papers online, if this subject intrigues you), EFNs have been found in over 2000 plant species. Scientists don’t seem completely sure why plants ‘feed’ ants in this way, though it may be a means of rewarding ant species for their protection against the plant-munching larvae of other insect species.

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About me

sconzani

sconzani

I'm a writer and photographer; researcher and blogger; birder and nature lover; countryside rambler and city strider; volunteer and biodiversity recorder.

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