Believed to be original in Russian:
Earliest, Sept 9, 2012, by Irina Al from Cheboksary (town), Chuvashia (country)

Older ones:
here.

Here in English
Also here
Also here
Earlier here from Olbita

The flower instructions are not part of the pattern.
Yarn: any with a yardage of 100 g / 100 m, overall amount 150 g needed.

The original name of this pattern is “Шарф с косой по середине”.
“Scarf with center cable” or Scarf with cable down the center“ are not the original pattern name under which this pattern has been published, those are just approximate translations of the original name.

Please do not change the pattern name. If you want to magic link it somewhere, just type “Irina Al” (the designer name) instead of the pattern name and it will show up. Write this: [Irina Al](pattern)

Might have originated in “Knitting New Tricks” by Ma Xiao Xia, originally published in 1991, republished 4-30-2009 with this scarf on the cover (not in Ravelry database but pictured here).