Extrafloral nectaries

[Finman]

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Yesterday I look blooming red elderberry. Bee did something but under the flowers. Then I noticed big extrafloral nectaries. They were about 1 mm long and 1,5 mm wide. And there was nectar too in them.

Another plants what I know is Prunus padus. I have seen when bees gather nectar from them.

Cherry has too those organs but I have not seen bees sucking them.

From internet Sambuscus sp.

 

[Black Comb]

The bees "harvest " my laurel hedge.
Bracken also, (Pteridium aquilinium) but I have never seen bees on it.

 

[user 3204]

Besides the top canopy of Sycamore, Oak, Holly and Ash (continual swarm like hum!) the Bees are all over the new growth on Laurel here too - even though the flowers have long since gone!