Particles around a sphere

Hi, i wanted to create grass with the emitter option around a sphere, but the objects have all the same rotation around the sphere so they point all e.g. upwards.

How can i change the rotation so that they point upwards on top downwards on bottom and so on?

Does your unclear question mean you want the particles to emit from a sphere as shown below ?
If so look at the particle rotation settings https://www.blender.org/manual/en/physics/particles/properties/rotation.html