In general, flowers up there above 2000 metres above sea level are short and small. They have a relatively short growing season because the mountains can be covered in snow from November to as late as May or at least April. I saw white campion, forget-me-nots, lots of little yellow flowers, I think some were "lady's bedstraw" (galium verum) and potentilla but I'm not sure of the variety.
Not all the flowers are short. every now and then there were lovely irises. I didn't get a good photo; this is one I googled.
This is some kind of Alpine primula
The blue one is Round-headed Rampion
In this photo you can see my trekking poles which were absolutely when we had to go down a steep scree slope. 
If this photo had higher resolution, you might have been able to see a "sarrio" standing sentry on the high rocks. We watched a flock of them run down one side, up the other ahead of us. They made moving around the mountainside look so easy! Sarrio is a local name for chamoix.
The last stretch of the way down.
