Name of plant

Dave williams

Hello people, need your help please. 
Saw this woodland plant today, it has a leaf simular to a hosta and a lovely little white flower. Want to know it name and weather it could be invasive if planted in a shady part of the garden. 
Many thanks in advance. 
Dave. 

AnniD

I think it's a type of Erythronium

Dovefromabove

Yes erythronium aka Dog’s tooth violet. A lovely plant
https://www.rhs.org.uk/plants/89327/erythronium-pagoda/details 

I’ve never heard of them being described as invasive  … they’re gorgeous, but the slugs keep spoiling mine 😢 

Woodgreen

It is an erythronium but not the dog's-tooth violet. That name belongs to erythronium dens-canis, smaller and earlier.

The ones in the photo derive from erythronium tuolumnense.
I find the dogs-tooth violet less slug-prone, it will even grow in grass. You may like to try it instead @Dovefromabove.

Silver surfer

Maybe Erythronium californicum White Beauty.
A wonderful woodland spring plant.
Not invasive.

Woodgreen

Beautiful, @Silver surfer.
I think I'll be trying again with these larger flowered ones.

Dovefromabove

Thanks for the correction @Woodgreen … 😊 

Fairygirl

I'd be happy if mine multiplied more than they do, but gorgeous when they flower, and a welcome sight at this time of year. 
Definitely a worthwhile addition to your shady garden @Dave williams 

Woodgreen

I just had a look online with a view to trying "White Beauty''. Hayloft will be sending out bulbs in September. I think that might be a good way of buying them @Dave williams 

Cambridgerose12

So far in my slug-dominated garden, the only one to persist and increase (terribly slowly) has been E. ‘Pagoda’. It helps if they are mulched before coming up with composted bark—that seems to deter the molluscs.

Silver surfer

Woodgreen said:

I just had a look online with a view to trying "White Beauty''. Hayloft will be sending out bulbs in September. I think that might be a good way of buying them @Dave williams 

In the past I did this..result...nothing grew!
If at all possible try to seek them out now while they are actively growing.

Maybe visit an Alpine garden show/Scottish rock garden show...
or order mail order from a specialist nursery.
eg Nigel who runs Longacre in Somerset.

https://www.plantsforshade.co.uk/cgi-bin/ss000001.pl?page=search&SS=erythronium&ACTION=Go!&PR=-1&TB=A

eg Kath at Edrom.

https://www.edrom-nurseries.co.uk/shop/pc/showsearchresults.asp?incSale=0&IDSale=0&ProdSort=&PageStyle=p&customfield=0&SearchValues=&exact=0&keyword=erythronium&priceFrom=0&priceUntil=9999999&idCategory=0&IdSupplier=&withStock=&IDBrand=0&SKU=&order=1&VA=1

eg Macplants.

https://www.macplants.co.uk/viewItem.php?id=8887&searchText=erythronium&plantTypeId=&title=&commonName=

I have seen the yellow one Erythronium Pagoda for sale at times in  large garden centres.

Lots more  of my Erythronium pics below.

https://www.flickr.com/search/?user_id=11713966@N02&sort=date-taken-desc&text=erythronium&view_all=1