| "trilobum" is a species designation meaning three leaved - it is not a plant name. I believe the plant you are referring to is Trifolium repens 'Dragon's Blood' (note correct spelling). Looks great as a groundcover surrounding hostas, red flowered astilbe like 'Fanal' and dark leaved heucheras |
Here is a link that might be useful: Trifolium repens 'Dragon's Blood'