Purple Paederia Foetida (Skunk Vine) 紫の屁糞葛（ヘクソカズラ）

Japanese follows English. 英語の後に日本語が続きます。

I've written about paederia foetida at least twice because I love this tiny plant even though it's smelly. (Its another more common name is "skunk vine" and the Japanese name is "fart shxx vine"😝) 

But today, I noticed something. I thought that skunk vine flowers are white (photos 3 and 4), but look at the flowers in the photos below (1 and 2). They are purple, aren't they? 

Some websites say that the outer layer of the tube part of the flower is white while the inner part is purple. So, is the color difference because the outer layer of the purple flowers is thinner and that's why the inside purple can be seen through the white layer? Or will the purple tube soon turn into white? I want to know the answer!! My bet is that a skunk vine can have white and purple flowers both! What do you think? 

1. Purple paederia foetida 紫の屁糞葛

2. Purple skunk vine 紫のヘクソカズラ

3. White paederia foetida 白い屁糞葛

4. White flowers 白い花

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紫の屁糞葛（ヘクソカズラ）です。花は白だけと思っていましたが、紫の花を見つけました（1枚目と2枚目）。花の筒状の部分は外層が白、中は紫なので、単に外層部分が薄くて紫が透けて見えているだけなのでしょうか。それともいずれ紫から白に変わるのでしょうか。しばらく観察しなくてはなりません。

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