Found in my new garden

Prunus padus...common name bird cherry leaf pics showing the tiny bumps that are glands in first pic.

 

I'll have a look in the morning.

 

Didn't have a look this morning as it was pouring but just got back from the afternoon walk.
I've never look at the trees closely before, always just admired them from a distance when in flower.
There were a couple of dozen trees of differing size and age and the results are interesting.

This is from a tree about 7ft and not very old- no sign of glands on these or any other leaves I could see. The smaller trees were all the same - no glands on leaves.


In a different part of the fields on a much larger and older tree showing the glands. As far as I could see all the older trees had glands -


Leaf from pic above showing glands


So maybe the glands appear with age...?

EDIT - PS what is the purpose of the glands?

 

Quote www...
"There are two small nectar glands on the petiole, or leaf stem, at the base of the leaf, and these exude a chemical that attracts beneficial insects, in response to attacks by pests such as greenfly."

 

I think some passion flowers grow bumps on the leaf stalks that mimic caterpillar eggs, which stops certain butterflies laying their eggs on the plant, sorry, just rambling.

 

How interesting - thanks @Silver surfer
I wish my runner beans had them

 

Very interesting post re bees and beans ..see link below.
Beans seem to be self fertile but bumble bees have found a way to get the nectar via the back door...by utting a hole in the back of the flower. Clever.

Any nectar given in peas and green bean flowers?