There are some websites which currently cannot be mentioned on here albeit allowed in the past.

Please check out what I posted to the linked reference thread and in particular the material within the link I added to my 2nd post.

I will supplement my link with the following :

I would like to suggest that people use the few relatively simple color keys and determining the type and name would be relatively easy.

All of the Ipomoea purpureas in question have relatively dark blueish limbs,the remaining key questions to ask and to look for would only be 3...

1) What color is the Star(?) >...fuchsia(?) or blue(?)...>fuchsia = more of an Ott.... or blue = more of a SOY...

2) Is there alot (!) of fuchsia around the throat and down into the tube...yes or no...>alot = a more typey Ott or a more typey Kniola

3) How dark is the limb...medium blue...dark blue...very/extremely dark blue..(?)...> medium or dark=SOY or Ott..>.very/extremely dark= Ott or Kniolas

If the flower you have is not outstandingly typey for a particular named cultivar,then simply see which type it most closely matches...

Should you be interested to post your bloom here,I will take a look at it,apply the 3 basic general keys stated above and offer an opinion...

Hope that helps.

Ron

P.S. The more people that apply these general keys and select out for the most typey blooms, the easier it will be to determine what types people have...or the in other words to determine and separate the 'mutts'/mixed breeds from the pure-breeds...

I've always liked both 'mutts' and pure-breeds...

Here is a link that might be useful: Dark Morning Glories :Grandpa Otts,Star of Yelta,Kniowlas, PresidentTyler is there really any difference?

Thank you so much ! That detail about the throats, and star color is very helpful, and that post you linked is great. I took a photo, but the dark violet flower looks blue in the picture, so , it may be more confusing than words. I think that may have been a factor when I looked at photos online, many showed a color shift.

Thank You !