What special adaptation do strawberry plant stems have

I am thinking of of strawberry runners, also called stolons:

these an a sort of extrernal connections between the particular plants, which can be used to grow new plants, as when the end of one such stem finds an appropriate place in the ground and sprouts roots there.

Do you think you might have needed a different kind of adaptation?

What are the options?

There would be one bar shorter than the bar for peaches.