Eleusine

Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. & Webb, D.A., Flora Europaea 5. 1980
but modified
1Annual; with 5-12 slender spikes, 3.5-15.0 cm x 3-5 mm
1'Perennial; with 2-4 thick spikes, 1.5-3.5 cm x 7-15 mm