Salad with Mandarins and Fennel

This is the most beautiful and tasty salad.  We don't bother with any dressing since the mandarins are very juicy.

2-3 handfuls washed baby greens
1/4 fennel bulb, thinly sliced
2 mandarins, peeled and segmented (remove any seeds)
2 T. pistachios, roasted and salted
Crumbled feta

Toss and serve.  That's it!