What are these stars in my microscopic image?
Despite low resolution, I'd say those are trichomes. Jasminum is genera that produce essential oils, so it have glandular hairs and other trichomes wich help to rettain the oil layer.



Source: http://cms.herbalgram.org/herbalgram/issue53/article2207.html?ts=1376643526&amp;signature=b4349f7f3ca6f6a47823f4754237eaac

The image displayed above shows glandular and non-glandular trichomes in lavander shown by scanning electron microscopy. I'm afraid I couldn't find anything about Jasminum in particular, but I think it must be the same kind of structure.