Maybe Acer negundo, Boxelder Maple?

Thanks, Jay

A friend in Australia has A. negundo 'Variegatum', but I never saw it in flower.

Not what I was expecting.

Edit: Thanks, GG, also

A very interesting picture of the Acer negundo flowers!

The box elder is perhaps violaceum although it may be a bit on the pale side. And its twigs are apparently merely green. There is a horticultural clone that is grown and sold under that botanical name, with purplish twigs, startlingly pink male catkins and bronze new growth being its key features.

So maybe this tree is merely another example of a male violaceum other than the more colorful and conspicuous selected form circulated in commerce.

Otherwise I don't think that bluebell is non-scripta which is actually pretty distinctive. So that if I were wanting to name it accurately I would check the details of how hispanica, x massartiana and non-scripta are told apart.

Embothrium.

Thanks for the feedback.

Not sure about violaceum, as there appears to be, depending on where you look, a var. and a cultivar. A couple of places listing it do state that it is grafted, which indicates a cultivar.

I can't find anywhere that states exactly what the difference is between A. negundo and A. negundo var violaceum, apart from the colour of the new stems.

I suspect that violaceum might just be a habitat/cultivation induced variable, the most extreme form becoming the cultivar.

The non-scripta, I believe is correct. This one, as you can see, is only just starting to open its flowers. The only 2 I saw that were further developed, were definately non-scripta, with the crook-top. As I said I only spotted 5 in a wood that covers several hectares. Totally green at the moment, but totally blue very soon.

Imo Embothrium is correct and the Bluebell is not non-scripta. It looks like one of the hybrids to me.

Yep - looks like a typical garden bluebell.

Regarding the maple violaceum is a botanical designation that has been applied to part of the wild population. With there having been a male clone selected and distributed under this same botanical name without a separate horticultural term (cultivar name) having been coined to differentiate this particular cultivated material from the rest of the population.

And that is all there is to it. With whether or not the example asked about here also falls within violaceum in the botanical sense depending on if it has all the right features.

Many of our wild bluebell populations have been intermingled with garden genes and it’s quite a problem.

“Does it matter that we have both in the wild?

The UK's woodlands are home to almost 50% of the world's population of the bluebell. But this much-loved plant is under threat. The Spanish bluebell is more vigorous than our native bluebell, so can outcompete it for resources like light and space. It can hybridise with our native, too, producing fertile plants that show a whole range of mixed features from both species. Over time, this hybridisation changes the genetic makeup of our native species, diluting its characteristics, weakening it and potentially evolving it into something else.

It is now thought that most bluebells in urban areas are actually hybrids. A study by Plantlife has also found that one in six broadleaved woodlands contained hybrids or the Spanish bluebell.” https://www.wildlifetrusts.org/wildlife/how-identify/identify-bluebells