H. 'Limona'. It's a very prolific, pretty flowered hybrid. And, the color can vary wildly from an all white/green flower to even heavier reddish venation than yours. Yours is very nice!

Jim

Yes I guess that they are the same. Hate that when it happens. The sellers make more money that way.
Maida

Of course it is! I put my thinking cap on but couldn't come up with it as mine hasn't bloomed for a few years, maybe this year! The first year mine bloomed it was decidedly yellow and then paler in subsequent years.

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it's pretty by any name.
Donna,
Madam Butterfly will be blooming in a couple of days. It definitely out of papilio.but to what I don't know. It gets big - as big as eight inches.
Maida