Asarina, Maurandya or Lophospermum etc.

[Lvandelft]

I would like to know if, when I am talking about Lophospermum erubescens,
Asarina erubescens or Maurandya (Maurandella) erubescens, tese are all the same or different plants.
My interest is mostly to know if a plant called Maurandya Red Dragon is the same as a red flowered Asarina, or is this a Lophospermum?? There exists a Maurandya Magic Dragon too, but this seems to be the most reddish one.
I know the yellowish Asarina procumbens, but am not sure if that name changed too??
I hope there is some forumist who can explain more about my questions.

[Afloden]

 Try www.plants.usda.gov. If the species is native or introduced in the US the species should be listed and will have a list of synonomized names with the current name.

 It looks like Asarina erubescens is now Lophospermum. Maurandya erubescens was also an older name.

 Asarina procumbens is still the same.

 I wish I could help on the cultivars.

 Aaron Floden
 Knoxville, TN

[Lvandelft]

Thank you Aaron!
I had a look at this site you mentioned, which is very interesting.
I had a look at the Plantfinder too and it is getting a bit clearer now for me.
And I googled a lot too and find out that Maurandya is non-climbing and
Lophospermum is climbing.